54.22% is the change from 308 to 475
Calculation steps:
[( 475 - 308 ) ÷ 308] x 100 = 54.22%
Formula
Percentage change = [(475 - 308) / 308] x 100
Subtract the new number by the original number
475 - 308 = 167
167 ÷ 308 = 0.5422077922077922
0.5422077922077922 x 100 = 54.22%