-51.59% is the change from 818 to 396
Calculation steps:
[( 396 - 818 ) ÷ 818] x 100 = -51.59%
Formula
Percentage change = [(396 - 818) / 818] x 100
Subtract the new number by the original number
396 - 818 = -422
-422 ÷ 818 = -0.5158924205378973
-0.5158924205378973 x 100 = -51.59%