Percentage Decrease Calculator
Find the percentage decrease from a starting value to a new, lower value. Everything runs locally in your browser.
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How it works
Subtract the new value from the original, divide by the original, and multiply by 100: ((old − new) ÷ old) × 100. For all three percentage modes, use the full Percentage Calculator.
FAQ
How do I calculate percentage decrease?
((old − new) ÷ old) × 100. From 200 to 150 is ((200 − 150) ÷ 200) × 100 = 25%.
Is my data uploaded?
No — it runs entirely in your browser.