Percent Decrease Calculator

Calculate how much a value has decreased in percentage terms. Enter the original value and the new lower value to find the decrease and percentage decrease.

Enter the original value and the new value to find the percentage decrease.

How to Calculate Percent Decrease

  1. Subtract the new value from the original value to find the amount of decrease.
  2. Divide the decrease by the original value.
  3. Multiply the result by 100.

Example: a price drops from $200 to $150. The decrease is 200 − 150 = 50. The percentage decrease is 50 ÷ 200 × 100 = 25%.

Percent Decrease Formula

Percentage Decrease = ((Original Value − New Value) ÷ Original Value) × 100

Example of Percentage Decrease

Example 1: Original = 200, New = 150. Decrease = 200 − 150 = 50. Percentage decrease = 50 ÷ 200 × 100 = 25%.

Example 2: A company's monthly visitors fall from 5,000 to 4,250. Decrease = 5,000 − 4,250 = 750. Percentage decrease = 750 ÷ 5,000 × 100 = 15%.

Percent Decrease vs Percent Increase

Percent decrease specifically describes a drop from an original value to a lower one. Percent increase describes the opposite — a rise from an original value to a higher one. If your new value turns out to be higher than the original, you're actually looking at a rather than a decrease.

Common Uses

  • Price reductions
  • Discounts
  • Population decreases
  • Sales declines
  • Measurements
  • Performance changes

Related Calculators

Frequently Asked Questions

Percentage Decrease = ((Original Value − New Value) ÷ Original Value) × 100. Subtract the new value from the original value, divide by the original value, then multiply by 100.