Percentage Calculator
Calculate percentages and percentage changes easily.
Result
25
25% of 100
Common Percentage Calculations
10% of 100 = 10
25% of 80 = 20
50% of 200 = 100
100% of 150 = 150
Frequently Asked Questions
How do I calculate percentage of a number?
To find X% of Y, multiply Y by X/100. For example, 25% of 80 = 80 × 0.25 = 20.
How do I calculate percentage increase?
To find the percentage increase from A to B: ((B - A) / A) × 100. For example, from 50 to 75: ((75 - 50) / 50) × 100 = 50%.
What percent is X of Y?
To find what percent X is of Y: (X / Y) × 100. For example, what percent is 30 of 150? (30 / 150) × 100 = 20%.