-85.51% is the change from 842 to 122
Calculation steps:
[( 122 - 842 ) ÷ 842] x 100 = -85.51%
Formula
Percentage change = [(122 - 842) / 842] x 100
Subtract the new number by the original number
122 - 842 = -720
-720 ÷ 842 = -0.8551068883610451
-0.8551068883610451 x 100 = -85.51%