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Percentage Increase Calculator

Determine how much one number has increased or decreased compared to an original value.

How this calculator works

Measure percentage increase or decrease between original and new values.

Formula

percentage change = ((new - original) / original) * 100

Step-by-step

  1. Enter original value.
  2. Enter new value.
  3. Calculate to get percentage and absolute change.

Example

  • Original = 80
  • New = 100

Percentage change = 25%

FAQs

What does a negative result mean?

It means the value decreased compared to the original.

Why can't original value be zero?

Division by zero is undefined, so percentage change cannot be computed from zero baseline.

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