Calculate the percentage decrease between two values with the absolute drop shown.
Percentage decrease measures how much a value has fallen relative to the original. Subtract the new value from the old, divide by the absolute value of the original, and multiply by 100.
Percentage Decrease
Percentage Decrease = ((Old − New) / |Old|) × 100
You get a negative result, which means the value actually increased. Use the Percentage Increase calculator for that scenario.
Not in the usual sense — a value can't decrease by more than 100% of itself without going negative. A result over 100% means the value changed sign.