Percentage change
Your result25 %
(100 − 80) ÷ 80 × 100. A negative result is a decrease.
Change = (new − original) ÷ original × 100
Percentage points measure the difference between two percentages. Percent change measures that difference relative to the starting percentage.
Worked example
An increase from 10% to 15% is 5 percentage points, but a 50% relative increase because 5 ÷ 10 × 100 = 50%.
Try it with your own numbers
Use the Percentage Change Calculator to check another example. Read the input labels carefully and keep units consistent.
Before you use the answer
Choose the correct starting quantity and keep full precision until the final step. An arithmetic result describes the numbers entered; the usefulness of the result depends on accurate measurements and the assumptions in the calculation.
