Everyday Life
Percentage calculator
Percentages trip people up because the same two numbers can answer three different questions: what is 15% of 200, what share of 200 is 30, and how much did 80 change to become 100. Pick the question, enter two numbers, and get the answer with the exact formula shown beside it. This covers discounts, tax, tips, grade shares, price increases, and the percentage-point versus percent-change distinction that catches so many people out.
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Percentage Calculator
Find a percentage of a number, a share of a whole, or the change between two values.
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Pocket calculatorA handheld calculator for quick checks away from a browser.Paid link · Check current price ↗As an Amazon Associate I earn from qualifying purchases.The math, plainly
How it works
- 01
Pick the mode first — the same two numbers mean different things in each mode.
- 02
X% of Y multiplies; X as a share of Y divides; percent change divides the difference by the starting value.
- 03
Percent change is negative when the value falls and uses the absolute starting value as its base.
Try a real scenario
Tip on a discount
Inputs15% of 200
Result30.
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