Percentage Calculator

Work out percentages, proportions, and change — three handy modes in one tool.

Category

Calculator

How to Use

  1. Pick a mode: what % of a number, what proportion, or change %
  2. Fill in the values in the corresponding fields
  3. The result updates live in the result box

Examples

  • What is 20% of 150?

    Input: 20%, 150

    Output: 30

  • Increase from 80 to 100?

    Input: From 80 to 100

    Output: 25%

FAQ

How do I calculate a discounted price?
Compute the discount amount (e.g. 20% off means 80% of the original), then subtract it from the original price.
How are growth and drop rates calculated?
Growth rate = (new − original) / original × 100%. A negative result means a decrease.
Percentage vs percentage point?
A percentage is a ratio; a percentage point is an absolute difference. For example, a rate rising from 5% to 6% is +1 point (+20%).

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