-52.54% is the change from 828 to 393
Calculation steps:
[( 393 - 828 ) ÷ 828] x 100 = -52.54%
Formula
Percentage change = [(393 - 828) / 828] x 100
Subtract the new number by the original number
393 - 828 = -435
-435 ÷ 828 = -0.5253623188405797
-0.5253623188405797 x 100 = -52.54%