-19.6% is the change from 857 to 689
Calculation steps:
[( 689 - 857 ) ÷ 857] x 100 = -19.6%
Formula
Percentage change = [(689 - 857) / 857] x 100
Subtract the new number by the original number
689 - 857 = -168
-168 ÷ 857 = -0.19603267211201866
-0.19603267211201866 x 100 = -19.6%