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Percentage Calculator

What is 20% of 50?

10.00

20 is what percent of 50?

40.00%

% change from 20 to 50?

150.00%

Percentage Calculator — Overview

The Percentage Calculator is a versatile mathematical tool that simplifies percentage-related calculations. It can help you:

  • Find a percentage of a number.
  • Determine what percentage one number is of another.
  • Calculate percentage increase or decrease.

This tool is useful for everyday tasks like calculating discounts, interest rates, tips, and analyzing statistics.

How is it calculated?

The calculator uses the following formulas based on your inputs (X and Y):

  • What is X% of Y? → (X / 100) * Y
  • X is what percent of Y? → (X / Y) * 100
  • Percentage change from X to Y: → ((Y - X) / X) * 100

Frequently Asked Questions

Percentages are used everywhere: calculating discounts in stores, understanding interest rates on loans and savings, interpreting statistics in the news, and figuring out tips at restaurants.

To calculate a percentage increase, subtract the original number from the new number, divide the result by the original number, and then multiply by 100.

To calculate a percentage decrease: subtract the new number from the original number, divide the result by the original number, and multiply by 100.
Example: If the price drops from 80 to 60 → ((80 - 60) / 80) * 100 = 25%.

Yes. The calculator can handle any numerical inputs, whether small or large, and provides accurate percentage results instantly.

This basic calculator handles single-step percentage calculations. For compound percentages, such as compound interest or successive discounts, you may need to perform multiple calculations or use a specialized compound calculator.

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