Percentage Calculator
Calculate percentages instantly: X% of Y, what percent X is of Y, percentage change, and percentage increase or decrease.
Percentage Calculator
About the Percentage Calculator
Percentages come up everywhere: exam marks, discounts, salary increases and tax. Enter two numbers and this percentage calculator solves the five most common percentage questions at once, with the working shown.
How to Use the Percentage Calculator
- Enter the first number (X).
- Enter the second number (Y).
- Press Calculate to see every percentage result for those numbers.
Formula and How It Works
X% of Y = X ÷ 100 × Y. X as a percentage of Y = X ÷ Y × 100. Percentage change from X to Y = (Y − X) ÷ X × 100. X increased by Y% = X × (1 + Y ÷ 100).
Frequently Asked Questions
How do I calculate exam percentage?
Divide the marks you got by the total marks and multiply by 100. For example 425 out of 500 is 425 ÷ 500 × 100 = 85%.
What is the difference between percent and percentage points?
If a rate goes from 10% to 12%, it rose by 2 percentage points, which is a 20% increase.