-89.73% is the change from 818 to 84
Calculation steps:
[( 84 - 818 ) ÷ 818] x 100 = -89.73%
Formula
Percentage change = [(84 - 818) / 818] x 100
Subtract the new number by the original number
84 - 818 = -734
-734 ÷ 818 = -0.8973105134474327
-0.8973105134474327 x 100 = -89.73%