Percentage Decrease Calculator

  • Enter the initial value and final value you want to calculate the percentage decrease for.
  • Click the "Calculate Percentage Decrease" button to perform the calculation.
  • The result will be displayed along with the detailed calculation and formula used.
  • You can clear the inputs and results using the "Clear Results" button.
  • To copy the result to the clipboard, click the "Copy Results" button.
  • Your calculation history will be displayed below.
Calculation History

Understanding Percentage Decrease


Percentage decrease is a measure of a quantity or value reduction expressed as a percentage of its original value. It’s commonly used in fields like finance, retail, and data analysis to understand changes over time or between different data sets.


The formula to calculate the percentage decrease is:

Percentage Decrease=((Original Value−New Value)/Original Value)×100%

Using a Percentage Decrease Calculator

Input Requirements

  • Original Value: The initial value before the decrease.
  • New Value: The value after the decrease.

Calculation Process

  1. Enter Values: Input the original and new values into the calculator.
  2. Calculation: The calculator automatically applies the formula to compute the percentage decrease.


  • The result is a percentage that represents how much the original value has decreased to reach the new value.
  • A higher percentage indicates a greater decrease.

Practical Applications

  1. Finance: Understanding stock price changes, budget reductions, or sales decreases.
  2. Retail: Calculating discounts or price reductions on products.
  3. Data Analysis: Analyzing data trends, such as a decrease in website traffic or production output.

Benefits of Using a Percentage Decrease Calculator

  • Accuracy: Ensures precise calculations, reducing human error.
  • Efficiency: Saves time compared to manual calculations.
  • Ease of Use: Simple interface, accessible to users without advanced mathematical skills.


A Percentage Decrease Calculator is a valuable tool for quickly determining the rate at which a value has decreased relative to its original amount. Whether analyzing financial data, assessing sales trends, or simply trying to understand changes in everyday numbers, this calculator simplifies the process and provides accurate results. Remember, understanding the context behind the numbers is as important as the calculation for making informed decisions. ​

Last Updated : 07 January, 2024

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