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Thursday, 13 August 2026

Percentage Calculator - Calculate Percentages, Increase, Decrease & Difference

Percentage Calculator

Calculate percentages, percentage increase, decrease, difference and more with this easy online calculator.

1. Percentage of a Number

Find a percentage of any number. Example: What is 20% of 500?

2. What Percentage is A of B?

Find what percentage one number is of another. Example: 50 is what percentage of 200?

3. Percentage Increase

Calculate the percentage increase between an original and a new value.

4. Percentage Decrease

Calculate the percentage decrease between an original and a new value.

5. Percentage Difference

Find the percentage difference between two values.

6. Find the Original Number

Find the number when you know a value and its percentage. Example: 20 is 50% of what number?


Percentage Calculator

Our free Percentage Calculator makes it easy to calculate percentages, find what percentage one number is of another, calculate percentage increase or decrease, compare two values, and find the original number from a known percentage. Enter your values, click Calculate, and get quick results instantly.


Why Use an Online Percentage Calculator?

Percentage calculations are commonly used in discounts, price changes, marks and grades, business calculations, finance, statistics, and everyday comparisons. Calculating them manually can sometimes be confusing, especially when comparing percentage increases or decreases. This tool provides a simple way to perform these calculations and check your results quickly.


Key Features of Our Percentage Calculator

  • Calculate a percentage of any number.
  • Find what percentage one number is of another.
  • Calculate percentage increase.
  • Calculate percentage decrease.
  • Calculate percentage difference between two values.
  • Find the original number from a known percentage.
  • Get quick and accurate results.
  • Copy calculation results with one click.
  • Clear the inputs easily and perform another calculation.
  • Works on desktop, tablet, and mobile devices.
  • No installation or registration required.

How to Use the Percentage Calculator

  1. Select the type of percentage calculation you need.
  2. Enter the required values in the input boxes.
  3. Click the Calculate button.
  4. Your result will appear instantly.
  5. Click Copy Result if you want to copy the answer.
  6. Click Clear to remove the current values and perform another calculation.

Percentage Calculation Examples


What is 20% of 500?

20% of 500 = 100

50 is what percentage of 200?

50 is 25% of 200.

What is the percentage increase from 100 to 150?

The percentage increase is 50%.

What is the percentage decrease from 200 to 150?

The percentage decrease is 25%.

20 is 50% of what number?

20 is 50% of 40.


What Can You Calculate With This Tool?

This online percentage calculator provides several useful calculations in one place. You can calculate a percentage of a number, determine what percentage one value represents of another, calculate percentage increase and decrease, find the percentage difference between two values, and determine an original number when a percentage and known value are provided.


More Useful Online Tools

You can also explore our other free online tools for everyday calculations and productivity:


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