Math

How Percent Change Is Calculated (Increase and Decrease)

Roboculator Editorial Team8 min read
Table of Contents

Understanding Percent Change

Percent change is a common calculation used to measure how much a value has increased or decreased compared to its original value. It is widely used in finance, economics, statistics, and everyday decision making.

People frequently calculate percent change when analyzing price increases, investment returns, salary adjustments, or business performance.

The Percent Change Formula

The formula used to calculate percent change is:

Percent Change = (New Value − Original Value) ÷ Original Value × 100

This formula expresses the difference between two values as a percentage.

Example Percent Change Calculation

Suppose a product originally costs $80 and the price increases to $100.

(100 − 80) ÷ 80 × 100 = 25%

This means the price increased by 25 percent.

Percent Increase vs Percent Decrease

When the new value is higher than the original value, the result is a percent increase. When the new value is lower, the result represents a percent decrease.

These calculations are essential for understanding financial growth and performance changes.

Using a Percent Change Calculator

The Roboculator Percent Change Calculator allows users to determine percentage increases or decreases instantly using two values.

This tool simplifies financial comparisons and everyday math calculations.

Ready to calculate?

Explore our Math calculators for instant results.

Browse Math Tools
R

Written by

Roboculator Editorial Team

The Roboculator Editorial Team writes guides explaining everyday math formulas and financial calculations.