-91.44% is the change from 935 to 80
Calculation steps:
[( 80 - 935 ) ÷ 935] x 100 = -91.44%
Formula
Percentage change = [(80 - 935) / 935] x 100
Subtract the new number by the original number
80 - 935 = -855
-855 ÷ 935 = -0.9144385026737968
-0.9144385026737968 x 100 = -91.44%