-91.6% is the change from 845 to 71
Calculation steps:
[( 71 - 845 ) ÷ 845] x 100 = -91.6%
Formula
Percentage change = [(71 - 845) / 845] x 100
Subtract the new number by the original number
71 - 845 = -774
-774 ÷ 845 = -0.9159763313609467
-0.9159763313609467 x 100 = -91.6%