How to Calculate Percentage Increase and Decrease
Percentage change shows how much a value moved relative to its original amount. It is one of the most used formulas in reporting, budgets, and pricing decisions.
Try the tool: Percentage Calculator →
Percentage Increase Formula
% Increase = ((New - Old) / Old) x 100
Example:
- Old = 200
- New = 260
- Increase = 60
- Percentage increase = 30%
Percentage Decrease Formula
% Decrease = ((Old - New) / Old) x 100
Example:
- Old = 120
- New = 90
- Decrease = 30
- Percentage decrease = 25%
Why Percentage Change Matters
- Salary raise analysis
- Stock and investment movement
- Business revenue growth tracking
- Weight-loss and performance tracking
- Price drops and budget adjustments
For broader percentage tasks, use Percentage Calculator. For return-focused comparisons, see ROI Calculator. If you need a dedicated workflow, use Percentage Change Calculator.
Use the NerdCalc Percentage Change Calculator
Enter your old and new values and get instant results without manual math.