How to Use
Choose the percentage calculation you need, enter your values, then select Calculate. Each result includes a simple explanation of the formula used.
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Percentage Calculator
Fast, simple percentage calculations for everyday use.
What is X% of Y?
Find a percentage of any number.
Result
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Enter values and select Calculate.
X is what percentage of Y?
Find what percentage one number is of another.
Result
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Enter values and select Calculate.
Percentage Change
Calculate the increase or decrease from an old value to a new value.
Result
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Enter values and select Calculate.
Increase or Decrease by a Percentage
Apply a percentage increase or decrease to a value.
Result
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Enter values and select Calculate.
Percentage Difference
Compare two values without treating either one as the original.
Result
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Enter values and select Calculate.
Find the Original Value
Work backwards from a final value after a percentage increase or decrease.
Original Value
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Enter values and select Calculate.
Common Uses
Useful for discounts, markups, price changes, test scores, statistics, business figures, comparisons and everyday percentage calculations.
Quick Tip
Percentage change uses the original value as the reference. Percentage difference compares two values using their average.