-18.34% is the change from 878 to 717
Calculation steps:
[( 717 - 878 ) ÷ 878] x 100 = -18.34%
Formula
Percentage change = [(717 - 878) / 878] x 100
Subtract the new number by the original number
717 - 878 = -161
-161 ÷ 878 = -0.18337129840546698
-0.18337129840546698 x 100 = -18.34%