23.26% is the change from 344 to 424
Calculation steps:
[( 424 - 344 ) ÷ 344] x 100 = 23.26%
Formula
Percentage change = [(424 - 344) / 344] x 100
Subtract the new number by the original number
424 - 344 = 80
80 ÷ 344 = 0.23255813953488372
0.23255813953488372 x 100 = 23.26%