# Percentage calculator

Canonical page: https://nepocore.com/tools/percentage/

Calculate a percentage of a value, determine what percent one number is of another, or compare a change between two values.

## How to use it

1. Enter the numbers, dates or units you want to compare.
2. Choose the calculation options and calculate.
3. Review the result together with the assumptions shown.

## Example

Find 15% of 200, or calculate the percentage increase from 80 to 100.

## Limits and checks

A percentage-of-base calculation cannot use zero as its denominator. Percentage change uses the absolute size of the starting value.

## Access and processing

Free to use without an account. Interactive processing requires JavaScript in a modern browser. Input is processed in the browser rather than sent to a processing server. Optional browser storage is not a synchronized account.


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