Percentage Increase Calculator Formula

Understand the math behind the percentage increase calculator. Each variable explained with a worked example.

Use the Percentage Increase Calculator

Formulas Used

Percent Increase

percent_increase = ((new_value - old_value) / old_value) * 100

Difference

difference = new_value - old_value

Variables

VariableDescriptionDefault
old_valueOriginal Value50
new_valueNew Value75

How It Works

How to Calculate Percentage Increase

Formula

Percentage Increase = ((New Value - Old Value) / Old Value) × 100

This formula tells you how much a value has grown relative to the original amount.

Worked Example

A product price increased from $50 to $75. What is the percentage increase?

old_value = 50new_value = 75
  1. 01Difference = 75 - 50 = 25
  2. 02Percentage Increase = (25 / 50) × 100
  3. 03= 0.5 × 100
  4. 04= 50%

Ready to run the numbers?

Open Percentage Increase Calculator