Percentage Calculator
Find a percentage of a number, a percentage share, or a percentage change.
Inputs
Find a percentage of any number.
20% of 150
30
20% of 150 is 30.
Breakdown
Result
30
Value minus result
120
Value plus result
180
- 20% part30(20%)
- Remainder120(80%)
Recent calculations
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Nothing saved yet. Use Save to history after a calculation.
About this tool
Work out percentages in several ways: a percentage of a number, what percentage one number is of another, percentage change, and more. Each result comes with a visual bar so you can see it at a glance.
How to use it
- Pick a calculation type from the tabs.
- Enter the values, or tap a preset chip.
- Read the result and its bar.
- Click an entry in your history to restore it, or copy the result.
Formulas
X% of Y = X ÷ 100 × Y
X is what % of Y = X ÷ Y × 100
% change from X to Y = (Y − X) ÷ |X| × 100
Example
20% of 150 is 30. 25 is 12.5% of 200. Going from 50 to 75 is a 50% increase.
Frequently asked questions
- Why does it say the result is undefined?
- Dividing by zero has no result. A percentage of zero, or a change from zero, cannot be calculated.