Percentage Increase Calculator
Calculate the percentage increase between an old and a new value.
Frequently Asked Questions
How do I calculate a percentage increase?+
Subtract the original value from the new value, divide by the original value, then multiply by 100. For example, from 100 to 150 the increase is (150 − 100) ÷ 100 × 100 = 50%.
What does a negative percentage mean here?+
If the new value is smaller than the original, the increase comes out negative — which means the value actually decreased by that percentage.
Why is the result 0% when the original value is zero?+
Percentage increase divides by the original value, so a starting value of zero has no defined percentage. The calculator returns 0% to avoid an invalid (divide-by-zero) result.
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