Percentage

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Percentage covers the four calculations people actually search for: what percent X is of Y, the result of increasing or decreasing a number by a percentage, percent change between two values, and the reverse — working backward from a percentage to the original number. Each mode shows its formula alongside the result, so you see the math, not just the answer. Runs fully offline.

Frequently asked

What percentage calculations does it cover?

Four modes: "X% of Y", percent change between two numbers, "X is what percent of Y", and increase/decrease by a percentage — the ones people search for most.

Does it show the formula it used?

Yes, each result is shown alongside the formula that produced it, so you can verify the math or learn it.