-17.41% is the change from 201 to 166
Calculation steps:
[( 166 - 201 ) ÷ 201] x 100 = -17.41%
Formula
Percentage change = [(166 - 201) / 201] x 100
Subtract the new number by the original number
166 - 201 = -35
-35 ÷ 201 = -0.17412935323383086
-0.17412935323383086 x 100 = -17.41%