-85.42% is the change from 878 to 128
Calculation steps:
[( 128 - 878 ) ÷ 878] x 100 = -85.42%
Formula
Percentage change = [(128 - 878) / 878] x 100
Subtract the new number by the original number
128 - 878 = -750
-750 ÷ 878 = -0.8542141230068337
-0.8542141230068337 x 100 = -85.42%