-85.27% is the change from 842 to 124
Calculation steps:
[( 124 - 842 ) ÷ 842] x 100 = -85.27%
Formula
Percentage change = [(124 - 842) / 842] x 100
Subtract the new number by the original number
124 - 842 = -718
-718 ÷ 842 = -0.8527315914489311
-0.8527315914489311 x 100 = -85.27%