-12.05% is the change from 166 to 146
Calculation steps:
[( 146 - 166 ) ÷ 166] x 100 = -12.05%
Formula
Percentage change = [(146 - 166) / 166] x 100
Subtract the new number by the original number
146 - 166 = -20
-20 ÷ 166 = -0.12048192771084337
-0.12048192771084337 x 100 = -12.05%