Percentage Calculator: All-in-one Solution

This all-in-one percentage calculator is perfect for students, shoppers, teachers, or anyone working with numbers.

Whether you need to find a simple percentage for a discount, calculate an increase or decrease, determine the percentage difference between two numbers, use a reverse percentage calculator, or figure out your grade percentage, this tool handles it all in one place.

If you’re wondering:

• “How do I calculate a percentage on a calculator?”
• “How to find a percentage of a number using a calculator?”

or looking for,

• “What percentage of calculator”
• “Is what percentage of calculator”
• “Increase/decrease percentage calculator”
• “Reverse percentage calculator”

You’re in the right place.

Whether you want to learn how to perform percentage calculations manually or understand how this calculator works, let’s break it all down with practical examples.

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How to calculate a percentage on a calculator?

To understand how a simple percentage calculator works, you should first understand what a percentage is.

As the name suggests, ‘per cent’ means ‘out of a hundred’. Thus, a percentage is a way of expressing a number as a fraction of 100. The symbol “%” represents “per hundred”.

Now let’s understand with a basic example:

You got a number, 648. 100% of 648 is 648.

To solve this, when we remove the %, we divide it by 100:

100/100 × 648 = 648

Now, let’s see what is 10% of 648:

10/100 × 648 = 64.8

Now, let’s see what is 50% of 648:

50/100 × 648 = 324

Hope this helped you understand what exactly a percentage means.

Now let’s understand how to calculate X% of Y using our “what percentage of” calculator.

Percentage Formula

Percentage = (Part / Whole) × 100

Example:

If you scored 45 out of 60 on a test:

(45 / 60) × 100 = 75%

This means you got 75% marks.

Q: What is 10% of 1,000?

Steps:

1. Enter 10 in the “Percentage” field.
2. Enter 1000 in the “Number” field.

Result: 10% × 1000 = 100

When is this calculator helpful?

It’s great for quickly figuring out tips, commissions, budgeting numbers, and basic math homework.

“X is What % of Y” Calculator

This calculator helps you answer questions like:

• What percentage is 45 out of 80?
• 25 is what percent of 200?
• How much percentage is 90 of 120?

Where you have two numbers and you have a find a percentage relation between both numbers.

Here is the formula involved:

Percentage = (X ÷ Y) × 100

Where X is the first number and Y is the second one, and Percentage is the result.

Question: What percent is 45 of 80?

In this question, we have two numbers, and we want to calculate the percentage relationship between the two numbers. Here is how to calculate the percentage in such a case:

Step 1: Divide 45 by 80

45 ÷ 80 = 0.5625

Step 2: Multiply by 100

0.5625 × 100 = 56.25%

Answer: 45 is 56.25% of 80.

Utility:

This calculator is commonly used for calculating test scores, performance percentages, and comparing values in business and budgeting.

Now, let’s use the A Calculator Online‘s percentage calculator to solve this problem. Let’s see how quickly and easily it gives results.

As I entered the values, it instantly answered the percentage along with the steps involved.

“X is Y% of What” Calculator

This is a reverse percentage calculator where you have a number that was supposed to be the answer and a percentage, and what you want to find is the initial value.

Let’s understand this with an example:

Question: 50 is 25% of what number?

To find the first value based on the last value and percentage, here are the steps involved.

Question: 50 is 25% of what number?

Solution:

Let the number be x.

25% of x = 50

This means:

Now let’s solve this with our percentage calculator.

Steps:

• Enter 50 in the first field.
• Enter 25 in the percentage field.
• The result: 50 ÷ (25 ÷ 100) = 200

As you enter the values, the answer is extremely quick.

Utility:

This calculator is ideal for estimating totals when you only know a part. Students, retailers, and shoppers can use this calculator to save time

How Does the Percentage Difference Calculator Work?

This is another useful calculator that we often use to see growth or decline. This calculator helps you find the percentage difference between two numbers.

It answers questions like:

• What’s the percentage difference between 120 and 100?
• How much did performance change month over month?

Let’s say the first percentage is A and the second is B, the formula will look like:

Percentage Difference = |A − B| ÷ [(A + B) ÷ 2] × 100

Now, let’s understand with an example:

Q: What’s the percentage difference between 120 and 100?

We can solve this question in three steps:

• Step 1: Subtract the two numbers and take the absolute value: |120 − 100| = 20
• Step 2: Find the average: (120 + 100) ÷ 2 = 110
• Step 3: Divide and multiply by 100: 20 ÷ 110 × 100 = 18.18%

Utility:

This calculator is useful in data analytics, performance comparisons, salary analysis, or when tracking business growth.

How Does the Percentage Increase or Decrease Calculator Work?

This is another type of percentage calculator available on this webpage. This calculator is designed to show how much a number has increased or decreased in percentage terms.

So, if you were looking for an increase or decrease percentage calculator, this is the best free tool available for quick results.

Here is the formula used in this calculator:

Percentage Change = [(New Value − Original Value) ÷ Original Value] × 100

Now let’s understand this with an example:

Q: If a price increased from 80 to 100, what’s the percentage increase?

To find the percentage increase in this example, here are the calculations involved:

• Step 1: Subtract the original from the new: 100 − 80 = 20
• Step 2: Divide by original: 20 ÷ 80 = 0.25
• Step 3: Multiply by 100: 0.25 × 100 = 25%

Answer: 25% increase

Now let’s find the percentage increase with our calculator:

As you enter both values and hit ‘Calculate’, you get the answer.

Utility:

This tool is ideal for measuring inflation, business growth, sales performance, and pricing changes. It’s perfect for tracking growth or loss, especially in business, finance, or everyday scenarios like prices or income.

How Does the Marks Percentage Calculator Work?

This is another percentage calculator available on this webpage that students and teachers often need. This calculator helps students, teachers, and exam-takers quickly determine the percentage of marks obtained out of the total marks.

This calculator involves the basic percentage formula.

Formula:

Percentage = (Marks Obtained ÷ Total Marks) × 100

Now let’s understand this with an example:

Q: I scored 78 out of 100. What is my percentage?

As I said, this involves a simple percentage formula. So here are the steps to find the marks percentage:

• Step 1: Divide 78 by 100 = 0.78
• Step 2: Multiply by 100: 0.78 × 100 = 78%

Answer: 78%