-18.09% is the change from 857 to 702
Calculation steps:
[( 702 - 857 ) ÷ 857] x 100 = -18.09%
Formula
Percentage change = [(702 - 857) / 857] x 100
Subtract the new number by the original number
702 - 857 = -155
-155 ÷ 857 = -0.1808634772462077
-0.1808634772462077 x 100 = -18.09%