-4.78% is the change from 857 to 816
Calculation steps:
[( 816 - 857 ) ÷ 857] x 100 = -4.78%
Formula
Percentage change = [(816 - 857) / 857] x 100
Subtract the new number by the original number
816 - 857 = -41
-41 ÷ 857 = -0.047841306884480746
-0.047841306884480746 x 100 = -4.78%