-91.72% is the change from 858 to 71
Calculation steps:
[( 71 - 858 ) ÷ 858] x 100 = -91.72%
Formula
Percentage change = [(71 - 858) / 858] x 100
Subtract the new number by the original number
71 - 858 = -787
-787 ÷ 858 = -0.9172494172494172
-0.9172494172494172 x 100 = -91.72%