-79.36% is the change from 809 to 167
Calculation steps:
[( 167 - 809 ) ÷ 809] x 100 = -79.36%
Formula
Percentage change = [(167 - 809) / 809] x 100
Subtract the new number by the original number
167 - 809 = -642
-642 ÷ 809 = -0.7935723114956736
-0.7935723114956736 x 100 = -79.36%