-93.37% is the change from 166 to 11
Calculation steps:
[( 11 - 166 ) ÷ 166] x 100 = -93.37%
Formula
Percentage change = [(11 - 166) / 166] x 100
Subtract the new number by the original number
11 - 166 = -155
-155 ÷ 166 = -0.9337349397590361
-0.9337349397590361 x 100 = -93.37%