-86.41% is the change from 942 to 128
Calculation steps:
[( 128 - 942 ) ÷ 942] x 100 = -86.41%
Formula
Percentage change = [(128 - 942) / 942] x 100
Subtract the new number by the original number
128 - 942 = -814
-814 ÷ 942 = -0.8641188959660298
-0.8641188959660298 x 100 = -86.41%