Percentage calculator
What is X% of Y, what percent is X of Y, and percent change.
What is % of ? —
is what percent of ? —
From to is a change of —
Increase by % —
Decrease by % —
Runs locally in your browser. Nothing is uploaded.
How to use
- Fill in the two numbers in the formula you need.
- The answer appears to the right.
- Results are rounded to two decimals.
Questions
How is percent change calculated?
(new − old) ÷ old × 100. A negative result means a decrease.