25.8% is the change from 345 to 434
Calculation steps:
[( 434 - 345 ) ÷ 345] x 100 = 25.8%
Formula
Percentage change = [(434 - 345) / 345] x 100
Subtract the new number by the original number
434 - 345 = 89
89 ÷ 345 = 0.2579710144927536
0.2579710144927536 x 100 = 25.8%