-53.21% is the change from 857 to 401
Calculation steps:
[( 401 - 857 ) ÷ 857] x 100 = -53.21%
Formula
Percentage change = [(401 - 857) / 857] x 100
Subtract the new number by the original number
401 - 857 = -456
-456 ÷ 857 = -0.5320886814469078
-0.5320886814469078 x 100 = -53.21%