Percentage Calculator
The three percentage questions everyone asks — X% of Y, X is what % of Y, and percent change — solved instantly.
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Uses the standard U.S. grading scale (A = 4.0). Estimates only — confirm with your syllabus.
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Percentages in one line each
A percentage is just a fraction of 100. "15% of 80" multiplies; "12 is what % of 60" divides; percent change compares the difference to the starting value. Pick the mode and type your two numbers.