Percentage Calculator

Calculate percentages, percentages of values, percentage changes and related results quickly and easily.

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Percentage Formulas

Percentage of a number: Result = Percentage × Number ÷ 100 What percentage is one number of another: Percentage = Part ÷ Whole × 100 Percentage change: Percentage Change = (New Value − Original Value) ÷ Original Value × 100 Find original value after a percentage change: Original Value = Final Value ÷ (1 + Change ÷ 100)

How to Use the Percentage Calculator

1

Choose a Calculation

Select percentage of a number, percentage comparison, percentage change or original value.

2

Enter Your Values

Enter the values required for the selected calculation.

3

Calculate

Click the calculate button to see the result and the underlying values.

Common Percentage Uses

Discounts

Find how much a discount reduces an original price.

Increase & Growth

Measure increases in prices, income, sales or other values.

Ratios & Shares

Convert a part-to-whole relationship into a percentage.

Everyday Calculations

Use percentages for tips, marks, comparisons and everyday math.

Frequently Asked Questions

Multiply the number by the percentage and divide by 100. For example, 20% of 500 is 500 × 20 ÷ 100 = 100.
Divide the part by the whole and multiply by 100. For example, 50 is 10% of 500.
Subtract the original value from the new value, divide the result by the original value, and multiply by 100.
Subtract the new value from the original value, divide the result by the original value, and multiply by 100.
Yes. A percentage can be greater than 100% when the amount being compared is greater than the reference amount.

Related Calculators

Percentage Increase Calculator

Calculate percentage increases between values.

Percentage Decrease Calculator

Calculate percentage decreases between values.

Discount Calculator

Calculate discounts and final prices.

Average Calculator

Calculate the average of a set of values.

Ratio Calculator

Solve ratios and equivalent proportions.

Fraction Calculator

Calculate with fractions and mixed numbers.