Percentage Decrease Calculator
Percentage decrease measures the proportional reduction of a quantity from its initial level. It is commonly applied in inventory reductions, weight loss tracking, budget cuts, and asset depreciation.
Calculated Result
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Formula & Mechanics
Percentage Decrease = ((Original Value - New Value) / Original Value) × 100
Subtract the new lower value from the original value to find the amount lost. Divide by the original baseline, then multiply by 100.
Worked Step-by-Step Example
Scenario: A monthly utility bill drops from $250 to $200.
- Subtract new from original: 250 - 200 = 50
- Divide reduction by baseline: 50 ÷ 250 = 0.20
- Convert to percentage: 0.20 × 100 = 20%
The utility bill decreased by 20%.
Frequently Asked Questions
Can a percentage decrease exceed 100%?
Only if the value drops below zero (such as a bank balance going into negative overdraft). For physical quantities, a 100% reduction means zero remains.
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