-36.75% is the change from 166 to 105
Calculation steps:
[( 105 - 166 ) ÷ 166] x 100 = -36.75%
Formula
Percentage change = [(105 - 166) / 166] x 100
Subtract the new number by the original number
105 - 166 = -61
-61 ÷ 166 = -0.3674698795180723
-0.3674698795180723 x 100 = -36.75%