-80.72% is the change from 809 to 156
Calculation steps:
[( 156 - 809 ) ÷ 809] x 100 = -80.72%
Formula
Percentage change = [(156 - 809) / 809] x 100
Subtract the new number by the original number
156 - 809 = -653
-653 ÷ 809 = -0.8071693448702101
-0.8071693448702101 x 100 = -80.72%