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Business & Everyday
Calculate a percentage of a value, find what percentage one number is of another, and measure percentage increase or decrease in one place.
How to read these results
These values are calculated from your current inputs. Check the input units and this calculator’s stated assumptions or included scope alongside the results.
Primary result: Percentage of the base value
Supporting value: Part as a percentage of whole
Use the result for your next decision
Compare the primary result with your target or another option, then change only the conditions you want to test and recalculate. Before acting, also check the calculator-specific guidance and applicable conditions.
Keep up to three calculated result snapshots only for this page session and compare them with the current result. Inputs, URLs, and browser storage are not used.
Shares only the calculator name and displayed result summary. Inputs and URLs are not included or stored.
Uses your browser’s print feature without uploading or automatically saving your inputs or results.
Percentage change uses (new value - old value) ÷ |old value| × 100. A change rate is undefined when the old value is zero.
Percentage-of-value multiplies the base by the percentage divided by 100. Part-of-whole divides the part by the whole and multiplies by 100. Percentage change divides the difference by the absolute old value and multiplies by 100.
Use it for discounts, conversion rates, market shares, growth, or any other ratio. The calculator is unit-neutral, so keep the units of compared numbers consistent.