34.5% is the change from 229 to 308
Calculation steps:
[( 308 - 229 ) ÷ 229] x 100 = 34.5%
Formula
Percentage change = [(308 - 229) / 229] x 100
Subtract the new number by the original number
308 - 229 = 79
79 ÷ 229 = 0.34497816593886466
0.34497816593886466 x 100 = 34.5%