18.52% is the change from 108 to 128
Calculation steps:
[( 128 - 108 ) ÷ 108] x 100 = 18.52%
Formula
Percentage change = [(128 - 108) / 108] x 100
Subtract the new number by the original number
128 - 108 = 20
20 ÷ 108 = 0.18518518518518517
0.18518518518518517 x 100 = 18.52%