53.07% is the change from 228 to 349
Calculation steps:
[( 349 - 228 ) ÷ 228] x 100 = 53.07%
Formula
Percentage change = [(349 - 228) / 228] x 100
Subtract the new number by the original number
349 - 228 = 121
121 ÷ 228 = 0.5307017543859649
0.5307017543859649 x 100 = 53.07%