Percentage Calculator
Three percentage calculators in one: percent of a number, percentage ratio and percent change.
Calculator
15% of 200
30
15 is what % of 200
7.50%
Percent change (old → new)
25.00%
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Formula
Change % = (New − Old) / Old × 100Frequently Asked Questions
How do I calculate a percentage of a number?
Multiply the number by the percentage and divide by 100. 15% of 200 = 30.
How do I calculate percent change?
Subtract the old value from the new, divide by the old value and multiply by 100.