-12.17% is the change from 189 to 166
Calculation steps:
[( 166 - 189 ) ÷ 189] x 100 = -12.17%
Formula
Percentage change = [(166 - 189) / 189] x 100
Subtract the new number by the original number
166 - 189 = -23
-23 ÷ 189 = -0.12169312169312169
-0.12169312169312169 x 100 = -12.17%