-16.24% is the change from 819 to 686
Calculation steps:
[( 686 - 819 ) ÷ 819] x 100 = -16.24%
Formula
Percentage change = [(686 - 819) / 819] x 100
Subtract the new number by the original number
686 - 819 = -133
-133 ÷ 819 = -0.1623931623931624
-0.1623931623931624 x 100 = -16.24%