38.89% is the change from 342 to 475
Calculation steps:
[( 475 - 342 ) ÷ 342] x 100 = 38.89%
Formula
Percentage change = [(475 - 342) / 342] x 100
Subtract the new number by the original number
475 - 342 = 133
133 ÷ 342 = 0.3888888888888889
0.3888888888888889 x 100 = 38.89%