29.69% is the change from 128 to 166
Calculation steps:
[( 166 - 128 ) ÷ 128] x 100 = 29.69%
Formula
Percentage change = [(166 - 128) / 128] x 100
Subtract the new number by the original number
166 - 128 = 38
38 ÷ 128 = 0.296875
0.296875 x 100 = 29.69%