41.57% is the change from 166 to 235
Calculation steps:
[( 235 - 166 ) ÷ 166] x 100 = 41.57%
Formula
Percentage change = [(235 - 166) / 166] x 100
Subtract the new number by the original number
235 - 166 = 69
69 ÷ 166 = 0.41566265060240964
0.41566265060240964 x 100 = 41.57%