-89.78% is the change from 871 to 89
Calculation steps:
[( 89 - 871 ) ÷ 871] x 100 = -89.78%
Formula
Percentage change = [(89 - 871) / 871] x 100
Subtract the new number by the original number
89 - 871 = -782
-782 ÷ 871 = -0.8978185993111366
-0.8978185993111366 x 100 = -89.78%