-18.71% is the change from 839 to 682
Calculation steps:
[( 682 - 839 ) ÷ 839] x 100 = -18.71%
Formula
Percentage change = [(682 - 839) / 839] x 100
Subtract the new number by the original number
682 - 839 = -157
-157 ÷ 839 = -0.1871275327771156
-0.1871275327771156 x 100 = -18.71%