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Percentage Change Calculator

Calculate percentage changes between two values quickly.

How it works

Percentage change is calculated as: ((New - Old) / |Old|) × 100. Positive values show growth, negative values show decline.

How to Use

  1. 1 Enter your original (old) value in the first field
  2. 2 Enter your new value in the second field
  3. 3 See the percentage change instantly, colour-coded for increase (green) or decrease (red)
  4. 4 Enable batch mode to calculate multiple comparisons at once

Common Use Cases

  • • Calculating traffic changes month-over-month or year-over-year
  • • Measuring conversion rate improvements after A/B tests
  • • Tracking ranking position changes
  • • Reporting on revenue or sales changes

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