Percentage Decrease Calculator

Calculate the percentage decrease from an initial value to a final value.

Updated: August 2025 • Free Tool

Values

Result

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Percentage Decrease

What is a Percentage Decrease Calculator?

A Percentage Decrease Calculator is a tool used to determine the percentage reduction from a starting value to an ending value. It is a common calculation in finance, economics, and data analysis to measure decline or reduction.

This calculator is useful for:

  • Calculating discounts and sales
  • Analyzing stock price drops
  • Measuring performance reductions

If you're looking to calculate percentage increases instead, you can easily determine growth rates using our Percentage Increase Calculator.

For understanding the overall change between two values, whether increase or decrease, try our Percentage Change Calculator to get a complete picture.

When you need to find what percentage one number represents of another, our Percentage Calculator provides quick and accurate results.

How This Calculator Works

The formula for percentage decrease is:

((Initial - Final) / Initial) * 100

Example: If a product's price drops from $100 to $75:

((100 - 75) / 100) × 100 = 25% decrease

Real-World Examples

Sale Discount

A TV normally priced at $800 is on sale for $600.

((800 - 600) / 800) × 100 = 25% discount

Weight Loss

Body weight decreases from 180 lbs to 162 lbs.

((180 - 162) / 180) × 100 = 10% decrease

Revenue Decline

Monthly sales drop from $50,000 to $40,000.

((50,000 - 40,000) / 50,000) × 100 = 20% decrease

Stock Price Drop

A stock falls from $120 to $90 per share.

((120 - 90) / 120) × 100 = 25% decrease

How to Use This Calculator

1

Enter Initial Value

Input the starting number.

2

Enter Final Value

Input the ending number.

3

Get Result

The percentage decrease will be displayed.

Benefits of Using This Calculator

  • •
    Fast and Accurate: Get immediate and precise results for any percentage decrease calculation.
  • •
    Versatile: Useful for a wide range of applications, from finance to everyday life.
Percentage Decrease Calculator - Calculate the reduction rate between two numbers.
A chart showing a downward trend, representing a percentage decrease.

Frequently Asked Questions (FAQ)

Q: How do I calculate percentage decrease?

A: To calculate the percentage decrease, subtract the final value from the initial value, divide the result by the initial value, and then multiply by 100. Our calculator automates this process for you.

Q: What if the final value is greater than the initial value?

A: If the final value is greater than the initial value, it is a percentage increase, not a decrease. This calculator is specifically for calculating percentage decreases.

Q: Can I use this for financial calculations?

A: Yes, this calculator is perfect for financial applications such as calculating discounts, depreciation, or reductions in revenue.

Q: Is this calculator free?

A: Yes, our Percentage Decrease Calculator is a free tool for all users.