Education

Percentage Calculator

Solve four percentage questions in one form: percent change between two values, percent of a number, percent difference between two values, and what percent one number is of another.

Inputs

Adjust your numbers

Results update as you type.

Calculation type (required) Pick the question you want to answer. The form below shows only the fields that mode needs.

Old value (required) Percent-change mode only. The starting value. Must not be zero.

New value (required) Percent-change mode only. The ending value to compare against the old value.

Percent (required) Percent-of-a-number mode only. For example, enter 15 to compute 15% of the total.

Total (required) Percent-of-a-number mode only. The base number you're taking a percent of.

First value (required) Percent-difference mode only. Either value can come first — the result is symmetric.

Second value (required) Percent-difference mode only. The other value to compare with the first.

Part (required) X-is-what-%-of-Y mode only. The smaller piece, e.g. 30 if you're asking how 30 relates to a whole.

Whole (required) X-is-what-%-of-Y mode only. The reference total. Must not be zero.

Results

Live answer

Answer +25%

Calculation Percent change

Percent change +25%

Result —

Percent difference —

Percent —

How it works

Pick the percent question you want to answer — change between two values, X percent of a number, percent difference between two values, or X is what percent of Y — and the form shows only the inputs that mode needs. The answer comes back in the same units you entered, with a plain-English summary of the result.