-81.09% is the change from 809 to 153
Calculation steps:
[( 153 - 809 ) ÷ 809] x 100 = -81.09%
Formula
Percentage change = [(153 - 809) / 809] x 100
Subtract the new number by the original number
153 - 809 = -656
-656 ÷ 809 = -0.8108776266996292
-0.8108776266996292 x 100 = -81.09%