48.38% is the change from 308 to 457
Calculation steps:
[( 457 - 308 ) ÷ 308] x 100 = 48.38%
Formula
Percentage change = [(457 - 308) / 308] x 100
Subtract the new number by the original number
457 - 308 = 149
149 ÷ 308 = 0.4837662337662338
0.4837662337662338 x 100 = 48.38%