-87.06% is the change from 85 to 11
Calculation steps:
[( 11 - 85 ) ÷ 85] x 100 = -87.06%
Formula
Percentage change = [(11 - 85) / 85] x 100
Subtract the new number by the original number
11 - 85 = -74
-74 ÷ 85 = -0.8705882352941177
-0.8705882352941177 x 100 = -87.06%