-89.86% is the change from 878 to 89
Calculation steps:
[( 89 - 878 ) ÷ 878] x 100 = -89.86%
Formula
Percentage change = [(89 - 878) / 878] x 100
Subtract the new number by the original number
89 - 878 = -789
-789 ÷ 878 = -0.8986332574031891
-0.8986332574031891 x 100 = -89.86%