Percentage Decrease Calculator — Calculate % Decrease Instantly
Use this free percentage decrease calculator to find the percentage decrease between any two values. Enter your original and new value for an instant result including formula breakdown and visual comparison.
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How Is Percentage Decrease Calculated?
Percentage decrease measures how much a value has fallen relative to its original amount:
Percentage Decrease = ((Original Value − New Value) ÷ Original Value) × 100
For example if a price drops from £200 to £150 the percentage decrease is ((200 − 150) ÷ 200) × 100 = 25%
Common Uses for Percentage Decrease
Percentage decrease is used for price reductions, salary cuts, investment losses, population decline, weight loss tracking and any situation where a value has fallen over time.
FAQs
How do I calculate percentage decrease?
Subtract the new value from the original value, divide by the original value then multiply by 100. For example (100 − 80) ÷ 100 × 100 = 20% decrease.
What is the difference between percentage decrease and a discount?
They use the same formula. A discount is a percentage decrease applied to a price. Use our Discount Calculator if you want to calculate a sale price directly.
Can percentage decrease be more than 100%?
No — a value can only decrease by a maximum of 100% before reaching zero.
Is this calculator free?
Yes completely free with no sign-up needed.