43.37% is the change from 166 to 238
Calculation steps:
[( 238 - 166 ) ÷ 166] x 100 = 43.37%
Formula
Percentage change = [(238 - 166) / 166] x 100
Subtract the new number by the original number
238 - 166 = 72
72 ÷ 166 = 0.43373493975903615
0.43373493975903615 x 100 = 43.37%