28.15% is the change from 238 to 305
Calculation steps:
[( 305 - 238 ) ÷ 238] x 100 = 28.15%
Formula
Percentage change = [(305 - 238) / 238] x 100
Subtract the new number by the original number
305 - 238 = 67
67 ÷ 238 = 0.2815126050420168
0.2815126050420168 x 100 = 28.15%