-80.64% is the change from 878 to 170
Calculation steps:
[( 170 - 878 ) ÷ 878] x 100 = -80.64%
Formula
Percentage change = [(170 - 878) / 878] x 100
Subtract the new number by the original number
170 - 878 = -708
-708 ÷ 878 = -0.806378132118451
-0.806378132118451 x 100 = -80.64%