About the Percentage Calculator tool
Three of the most-searched percentage questions, answered as you type — perfect for discounts, tips, grades, raises and price changes.
How to use it
- Pick the question that matches yours.
- Fill in the two numbers.
- Read the answer — it updates live.
Frequently asked questions
How is percent change calculated?
(New − Old) ÷ Old × 100. A positive result is an increase, negative is a decrease.