37.34% is the change from 308 to 423
Calculation steps:
[( 423 - 308 ) ÷ 308] x 100 = 37.34%
Formula
Percentage change = [(423 - 308) / 308] x 100
Subtract the new number by the original number
423 - 308 = 115
115 ÷ 308 = 0.37337662337662336
0.37337662337662336 x 100 = 37.34%