-52.17% is the change from 828 to 396
Calculation steps:
[( 396 - 828 ) ÷ 828] x 100 = -52.17%
Formula
Percentage change = [(396 - 828) / 828] x 100
Subtract the new number by the original number
396 - 828 = -432
-432 ÷ 828 = -0.5217391304347826
-0.5217391304347826 x 100 = -52.17%