# Percentage Calculator

Work out percentages, increases and decreases.

## URL

https://ilham.dev/tools/percentage-calculator/

## What It Does

Work out percentages in the forms that actually come up: what X% of Y is, what percentage X is of Y, and the increase or decrease between two values.

## Features

- Runs in the browser
- No login required

## Input

text input.

## Output

text output.

## Privacy

Processing happens locally in the browser.

No input data is uploaded to ilham.dev.

- Requires login: false
- Requires API key: false
- Stores user data: false


## Examples

- Why do a percentage rise and fall not cancel out?




## Questions

### Why do a percentage rise and fall not cancel out?

Because they are relative to different bases. A 50% rise followed by a 50% fall leaves you at 75% of where you started, not back at the beginning.