-90.87% is the change from 942 to 86
Calculation steps:
[( 86 - 942 ) ÷ 942] x 100 = -90.87%
Formula
Percentage change = [(86 - 942) / 942] x 100
Subtract the new number by the original number
86 - 942 = -856
-856 ÷ 942 = -0.9087048832271762
-0.9087048832271762 x 100 = -90.87%