-2.22% is the change from 809 to 791
Calculation steps:
[( 791 - 809 ) ÷ 809] x 100 = -2.22%
Formula
Percentage change = [(791 - 809) / 809] x 100
Subtract the new number by the original number
791 - 809 = -18
-18 ÷ 809 = -0.022249690976514216
-0.022249690976514216 x 100 = -2.22%