22.9% is the change from 345 to 424
Calculation steps:
[( 424 - 345 ) ÷ 345] x 100 = 22.9%
Formula
Percentage change = [(424 - 345) / 345] x 100
Subtract the new number by the original number
424 - 345 = 79
79 ÷ 345 = 0.2289855072463768
0.2289855072463768 x 100 = 22.9%