Quick Math

Percentage Calculator

Enter values in any row and get instant results.

What is % of ?
is what percent of ?
is % of what?
What is the percent change from to ?
add % is what?

About this tool

Solve common percentage questions without rearranging formulas manually. Separate rows calculate a percentage of a number, determine what percentage one value is of another, recover the original total, measure percentage change, and add a percentage to a starting value.

How to use it

  1. Find the row that matches the question you need to answer.
  2. Enter the known values in that row.
  3. Read the result beside the inputs and adjust the values to compare another scenario.

Good to know: Percentage change uses the first value as the baseline; a zero baseline does not produce a meaningful percentage change.