-14.7% is the change from 857 to 731
Calculation steps:
[( 731 - 857 ) ÷ 857] x 100 = -14.7%
Formula
Percentage change = [(731 - 857) / 857] x 100
Subtract the new number by the original number
731 - 857 = -126
-126 ÷ 857 = -0.147024504084014
-0.147024504084014 x 100 = -14.7%