-16.16% is the change from 817 to 685
Calculation steps:
[( 685 - 817 ) ÷ 817] x 100 = -16.16%
Formula
Percentage change = [(685 - 817) / 817] x 100
Subtract the new number by the original number
685 - 817 = -132
-132 ÷ 817 = -0.16156670746634028
-0.16156670746634028 x 100 = -16.16%