Percentage Calculator
Calculate percentage of numbers, percent increase, percentage decrease, and growth rate instantly in your browser.
Calculations take place instantly inside your browser tab without network requests.
% of?
Calculated Result
100
Formula: 20% × 500 = 100
Advertisement
How to calculate percentages
Percentages represent fractions of 100. Percentage calculations are essential for financial planning, tip calculations, discount shopping, statistics, and business growth analytics.
Common percentage formulas
- Finding Percentage of a Number:
Result = (Percentage ÷ 100) × Total - Finding Percentage Proportion:
Percentage = (Value ÷ Total) × 100 - Finding Percentage Change / Growth:
Growth % = ((Final - Initial) ÷ Initial) × 100
Frequently Asked Questions
How do you calculate what X% of Y is?+
Multiply total amount Y by percentage X and divide by 100. For example, 20% of 500 = (20 ÷ 100) × 500 = 100.
How do you calculate percentage change between two values?+
Subtract initial value X from final value Y, divide the difference by X, and multiply by 100 (Formula: ((Y - X) ÷ X) × 100).
How do you find what percentage value X is of Y?+
Divide part X by total Y and multiply by 100. For example, 40 of 200 = (40 ÷ 200) × 100 = 20%.
Are calculations instant as I type?+
Yes. Every calculation updates live instantly as you modify numbers or select calculation modes.