-83.12% is the change from 942 to 159
Calculation steps:
[( 159 - 942 ) ÷ 942] x 100 = -83.12%
Formula
Percentage change = [(159 - 942) / 942] x 100
Subtract the new number by the original number
159 - 942 = -783
-783 ÷ 942 = -0.8312101910828026
-0.8312101910828026 x 100 = -83.12%