Percentage Calculator
What is X% of Y?
% of
X is what % of Y?
is what % of
Percentage change from X to Y
to
Increase / decrease X by Y%
1.
All four calculation types are shown at once - find the one you need
2.
Enter your values - the result updates instantly
▸
Calculating a discount or tax amount
▸
Working out percentage change between two figures
▸
Finding what percentage one number is of another
What calculations does this support?
The tool covers four common scenarios: X% of Y, X as a percentage of Y, percentage change between two values, and increasing or decreasing a value by a percentage.
How is percentage change calculated?
Percentage change = ((new value − old value) / |old value|) × 100. A positive result is an increase; a negative result is a decrease.
Is my data sent to a server?
All calculations run locally in your browser. No data is transmitted anywhere.
Can I calculate percentage discounts?
Use the "decrease by %" calculation. Enter the original price and the discount percentage to see the final price.
What is the difference between percentage point and percent?
A percentage point is an absolute difference (from 10% to 15% is 5 percentage points). A percent change is relative (from 10% to 15% is a 50% increase). The two are commonly confused.