Percentage Decrease Calculator

Calculate Percentage Decrease

What is a Percentage Decrease?

A percentage decrease represents how much a value has dropped relative to its original amount, expressed as a percentage. It measures the downward change between an original value and a new, lower value.

This calculation is commonly used for tracking price reductions, discount calculations, population decline, and depreciation of assets.

How to Calculate Percentage Decrease

Follow these steps to calculate the percentage decrease between two values:

  1. Find the difference: Subtract the new value from the original value
  2. Divide by original: Divide the difference by the original value
  3. Multiply by 100: Convert the decimal result to a percentage

Formula

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

The formula calculates the relative drop from the original value. The result is always expressed as a positive percentage when there is a decrease.

Example

Price Discount Example

Problem: A product's price dropped from $80 to $60. What is the percentage decrease?

Solution:

  1. Difference: $80 - $60 = $20
  2. Division: $20 / $80 = 0.25
  3. Percentage: 0.25 × 100 = 25%

Frequently Asked Questions

What if the new value is larger than the original?

If the new value is larger than the original, you have a percentage increase instead of a decrease. Use our Percentage Increase Calculator for this scenario.

Can percentage decrease be more than 100%?

No. The maximum percentage decrease is 100%, which occurs when the new value is zero. The value cannot decrease by more than its original amount.

How is this different from percentage difference?

Percentage decrease measures a drop from a specific starting value. Percentage difference measures the relative difference between two values without specifying direction.