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Calculate percentages quickly and easily. Find percentages of numbers, determine what percentage one number is of another, and calculate percentage increases or decreases.
Choose a calculation
Your calculation is performed instantly in your browser using standard percentage formulas.
Useful examples for everyday calculations
20% of 500
100
50 is what % of 200?
25%
100 + 20%
120
100 − 20%
80
Choose the type of percentage calculation you need, enter the numbers into the fields, and the result will be calculated automatically. You can calculate a percentage of a number, find what percentage one value represents of another, or determine the result after a percentage increase or decrease. Use the reset button whenever you want to start a new calculation.
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A percentage represents a portion of a whole out of 100. To find a percentage of a number, convert the percentage to a decimal by dividing it by 100 and multiply it by the number. For example, 20% of 500 is calculated as (20 ÷ 100) × 500, which equals 100. To determine what percentage one number is of another, divide the first number by the second number and multiply by 100. Percentage increases and decreases use the same basic percentage formula to add or subtract the calculated amount from the original value.
Percentage of a number
(Percentage ÷ 100) × Number
What percentage?
(Part ÷ Whole) × 100
Percentage change
(Change ÷ Original) × 100
Common questions about percentages
20% of 500 is 100. The calculation is (20 ÷ 100) × 500 = 100.
Divide the first number by the second number and multiply the result by 100. For example, 50 ÷ 200 × 100 = 25%.
Multiply the original value by the percentage divided by 100, then add that amount to the original value.
Multiply the original value by the percentage divided by 100, then subtract that amount from the original value.
Percentages are commonly used for discounts, taxes, tips, grades, interest, statistics, profit and loss, price changes, business calculations and many everyday situations.
Need help calculating a discount, increase, decrease, tax, tip or percentage? Ask your question and find the calculation you need.