-91.22% is the change from 809 to 71
Calculation steps:
[( 71 - 809 ) ÷ 809] x 100 = -91.22%
Formula
Percentage change = [(71 - 809) / 809] x 100
Subtract the new number by the original number
71 - 809 = -738
-738 ÷ 809 = -0.9122373300370828
-0.9122373300370828 x 100 = -91.22%