-14.94% is the change from 857 to 729
Calculation steps:
[( 729 - 857 ) ÷ 857] x 100 = -14.94%
Formula
Percentage change = [(729 - 857) / 857] x 100
Subtract the new number by the original number
729 - 857 = -128
-128 ÷ 857 = -0.14935822637106183
-0.14935822637106183 x 100 = -14.94%