-83.97% is the change from 842 to 135
Calculation steps:
[( 135 - 842 ) ÷ 842] x 100 = -83.97%
Formula
Percentage change = [(135 - 842) / 842] x 100
Subtract the new number by the original number
135 - 842 = -707
-707 ÷ 842 = -0.8396674584323041
-0.8396674584323041 x 100 = -83.97%