Solve the three percentage questions people actually get stuck on: X% of Y, what percent X is of Y, and the change from X to Y.
The Percentage Calculator answers the three questions people actually search for when they type 'percentage' into Google: 'what is X% of Y' (a discount, a tip, a tax slice), 'X is what percent of Y' (a test score, a completion rate, a market share), and 'what's the percentage change from X to Y' (a price rise, a salary bump, a metric moving month over month). Enter two numbers and all three answers appear at once.
Handy when you're double-checking a report ('revenue is up how much?'), a grade ('72 out of 90 is what percentage?'), or a bill ('what's 15% of this?'). Showing all three calculations at once means you don't have to remember which formula you actually needed — the answer you were looking for is one of the three on screen.
To find X% of Y, multiply Y by X/100. Example: 25% of 200 = 200 × 0.25 = 50.
Percentage change = ((new - old) / old) × 100.
Yes, the calculator shows 'X is what % of Y'.
Yes, results are displayed to two decimal places.
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