Percentage Difference Calculator
How it works: Enter the old and new values to calculate the percentage change. The formula is: ((New - Old) / Old) × 100. A positive result
Overview
Calculate percentage change between two values instantly with our Percentage Difference Calculator. Enter an old value and new value to see the percent increase or decrease, direction of change, and absolute difference. Perfect for analyzing price changes, tracking weight loss or gain, comparing sales figures, measuring growth rates, or any scenario requiring percentage calculations. The calculator automatically determines whether the change is an increase or decrease and displays the result clearly. Useful for business analytics, personal finance tracking, fitness progress monitoring, or academic calculations. All calculations use the standard percentage change formula: ((new - old) / |old|) × 100%. Results are displayed to two decimal places for precision. Works instantly in your browser with no data storage or tracking.
About
About Percentage Difference Calculator
Calculate percentage change between two values instantly. Enter old and new values to see percent increase or decrease, direction of change, and absolute difference. Perfect for analyzing price changes, tracking progress, or comparing values.
Features:
- Calculate percentage increase or decrease
- See absolute difference
- Visual indicators for direction
- Works with any numbers
- 100% private - no data stored
FAQ
How do you compute percent change?
((new − old) ÷ |old|) × 100% if old ≠ 0.
What if the old value is 0?
Percent change is undefined; we show a friendly message instead.
Do you round?
We show two decimal places for readability.