Percentage Calculator
What is X% of Y?
Result
50
Percentage Change
Change
+25%
How to Calculate Percentages
A percentage is a way of expressing a number as a fraction of 100. To find X% of Y: multiply Y by X and divide by 100. For example, 25% of 200 = 200 × 25/100 = 50.
Percentage Change Formula
Percentage change = ((New Value − Old Value) / Old Value) × 100. A positive result means an increase, and a negative result means a decrease.