30.23% is the change from 344 to 448
Calculation steps:
[( 448 - 344 ) ÷ 344] x 100 = 30.23%
Formula
Percentage change = [(448 - 344) / 344] x 100
Subtract the new number by the original number
448 - 344 = 104
104 ÷ 344 = 0.3023255813953488
0.3023255813953488 x 100 = 30.23%