-96.41% is the change from 418 to 15
Calculation steps:
[( 15 - 418 ) ÷ 418] x 100 = -96.41%
Formula
Percentage change = [(15 - 418) / 418] x 100
Subtract the new number by the original number
15 - 418 = -403
-403 ÷ 418 = -0.9641148325358851
-0.9641148325358851 x 100 = -96.41%