50.66% is the change from 229 to 345
Calculation steps:
[( 345 - 229 ) ÷ 229] x 100 = 50.66%
Formula
Percentage change = [(345 - 229) / 229] x 100
Subtract the new number by the original number
345 - 229 = 116
116 ÷ 229 = 0.5065502183406113
0.5065502183406113 x 100 = 50.66%