49.15% is the change from 234 to 349
Calculation steps:
[( 349 - 234 ) ÷ 234] x 100 = 49.15%
Formula
Percentage change = [(349 - 234) / 234] x 100
Subtract the new number by the original number
349 - 234 = 115
115 ÷ 234 = 0.49145299145299143
0.49145299145299143 x 100 = 49.15%