-18.65% is the change from 842 to 685
Calculation steps:
[( 685 - 842 ) ÷ 842] x 100 = -18.65%
Formula
Percentage change = [(685 - 842) / 842] x 100
Subtract the new number by the original number
685 - 842 = -157
-157 ÷ 842 = -0.18646080760095013
-0.18646080760095013 x 100 = -18.65%