Percentage Of Calculator
Calculate percentage of a number, percentage change, and reverse percentage.
What is% of?
Result:30
20% of 150 = 30
How percentage calculations work
Three common percentage questions answered instantly: What is X% of Y? multiplies Y by X/100 — useful for discounts, tips, and tax calculations. X is what % of Y? divides X by Y and multiplies by 100 — useful to express a part as a fraction of a whole. % change from X to Y? computes (Y−X)/|X| × 100 — shows growth or decline as a percentage. A positive result means an increase; negative means a decrease. All computations run entirely in your browser.
Private & free — this tool runs entirely in your browser.
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