Percentage Calculator
Find a percentage, a share or the change between two values.
Processed on your deviceFree · No account needed
How to use it
- Choose percentage of a value, percentage share or percentage change.
- Enter both values and calculate.
15% of 200 is 30. A change from 80 to 100 is 25%.
Details & limits
Finite inputs up to 1 trillion in magnitude. A percentage share or change cannot have a zero baseline.
How is percentage change calculated?
The formula is (new value − original value) ÷ original value × 100. The original value cannot be zero. Negative baselines retain their sign; interpret negative-value comparisons carefully.