49.78% is the change from 231 to 346
Calculation steps:
[( 346 - 231 ) ÷ 231] x 100 = 49.78%
Formula
Percentage change = [(346 - 231) / 231] x 100
Subtract the new number by the original number
346 - 231 = 115
115 ÷ 231 = 0.49783549783549785
0.49783549783549785 x 100 = 49.78%