-3.83% is the change from 810 to 779
Calculation steps:
[( 779 - 810 ) ÷ 810] x 100 = -3.83%
Formula
Percentage change = [(779 - 810) / 810] x 100
Subtract the new number by the original number
779 - 810 = -31
-31 ÷ 810 = -0.03827160493827161
-0.03827160493827161 x 100 = -3.83%