-72.78% is the change from 878 to 239
Calculation steps:
[( 239 - 878 ) ÷ 878] x 100 = -72.78%
Formula
Percentage change = [(239 - 878) / 878] x 100
Subtract the new number by the original number
239 - 878 = -639
-639 ÷ 878 = -0.7277904328018223
-0.7277904328018223 x 100 = -72.78%