-89.32% is the change from 871 to 93
Calculation steps:
[( 93 - 871 ) ÷ 871] x 100 = -89.32%
Formula
Percentage change = [(93 - 871) / 871] x 100
Subtract the new number by the original number
93 - 871 = -778
-778 ÷ 871 = -0.8932261768082663
-0.8932261768082663 x 100 = -89.32%