-44.22% is the change from 857 to 478
Calculation steps:
[( 478 - 857 ) ÷ 857] x 100 = -44.22%
Formula
Percentage change = [(478 - 857) / 857] x 100
Subtract the new number by the original number
478 - 857 = -379
-379 ÷ 857 = -0.44224037339556593
-0.44224037339556593 x 100 = -44.22%