48.92% is the change from 231 to 344
Calculation steps:
[( 344 - 231 ) ÷ 231] x 100 = 48.92%
Formula
Percentage change = [(344 - 231) / 231] x 100
Subtract the new number by the original number
344 - 231 = 113
113 ÷ 231 = 0.48917748917748916
0.48917748917748916 x 100 = 48.92%