Percentage Change Calculator

Calculate percentage increase or decrease

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Enter old and new values to calculate the percentage change.

How to Use Percentage Change Calculator

Enter values

Enter old and new values.

Calculate

See percentage change.

Details

View formula and breakdown.

Why Choose AllTools Percentage Change Calculator?

  • ✓ Increase/decrease
  • ✓ Formula display
  • ✓ Step-by-step
  • ✓ Direction indicator
  • ✓ Multiple calculations
  • ✓ No data stored

Why Use This Tool

  • ★ Instant calculations with no server round-trip
  • ★ Completely free with no usage limits
  • ★ No account or registration required
  • ★ Accurate results using standard mathematical formulas
  • ★ Works on any device including phones and tablets

Related Resources

Calculate percentages → Compound interest → Calculate discounts →

Frequently Asked Questions

How is percentage change calculated? ▼
((New - Old) / |Old|) × 100. Positive = increase, negative = decrease.
How is percentage change calculated? ▼
Percentage change = ((New - Old) / |Old|) x 100. Positive = increase, negative = decrease.
Does this work on mobile? ▼
Yes. All AllTools calculators are fully responsive and work on phones and tablets.

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