Useful Hacks

Percentage Calculator

Calculate percentages, percentage of a value and percentage change.

Calculated locally in your browser. Nothing you enter is uploaded or stored.

Overview

Three common percentage calculations in one tool: finding X% of a number, finding what percent one number is of another, and finding the percentage change between two numbers.

How to use it

  1. 1Pick the calculation you need from the tabs.
  2. 2Enter the values.
  3. 3The result updates instantly.

Formula

X% of Y

result = (X / 100) × Y

X is what % of Y

result = (X / Y) × 100

Percentage change

result = ((To − From) / From) × 100

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