Percent answers every everyday percentage question — what is X% of Y, how one number compares to another, what a part is out of a total, finding the whole from a part, percentage change, reverse percentages, and the difference between two numbers — each with a worked line so you can see how it got there. Nothing is uploaded.

Basics

What is % of ?

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is what % of ?

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Parts & totals

We have out of a total of — that's

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is % of what total?

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Change & adjust

From to is what % change?

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% =

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is the result after a % — the original was

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Compare

The percentage difference between and is

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Percentage change and reverse percentage are measured relative to the starting or original number, so a rise from 80 to 100 is a 25% increase while the drop back from 100 to 80 is a 20% decrease. Percentage difference is symmetric — it compares two numbers against their average, so the order doesn't matter. Results round to two decimals. Everything runs on your device.