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Math

Percentage Calculator

Calculate any percentage of a number, including decimals and negative values.

Exact method explained belowEditable inputs

Set up your calculation

Runs on your device

SOLUTION

Your result

Let’s calculate.

Use the Calculate button to see your result.

Review the method below for assumptions and conventions.

How to use this tool

  1. Enter percentage, of this number.
  2. Select Calculate to view the result.
  3. Check the method and assumptions below before using the result.

The method, explained

Result = percentage ÷ 100 × base number.

A WORKED EXAMPLE

20% of 250 is 50. A percentage of 150% applied to 80 is 120.

What to keep in mind

This tool finds a percentage of an amount. To compare an original and a new value, use Percentage Change.

Common questions

Can the percentage be greater than 100?

Yes. For example, 150% is one and a half times the base value.

Can I enter decimals?

Yes. Enter 2.5 for two and a half percent, rather than 0.025.

Methodology maintained by ClarityKit. How these tools are built and checked.