Percentage Calculator
Work out any percentage in seconds
Three handy tools in one: find a percent of a number, see what percent one number is of another, or calculate the percent change between two values.
Please enter valid numbers.
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How it works
- X% of Y: (X / 100) x Y.
- X is what % of Y: (X / Y) x 100.
- Percent change: ((Y - X) / X) x 100.
Frequently asked questions
How do I add a percent to a number?
Use "X% of Y" to find the amount, then add it to Y.
What does a negative percent change mean?
A decrease — e.g. -20% means the value fell by a fifth.
Can the base be zero?
For "X is what % of Y" and "% change", the divisor cannot be zero.