2.6% is the change from 423 to 434
Calculation steps:
[( 434 - 423 ) ÷ 423] x 100 = 2.6%
Formula
Percentage change = [(434 - 423) / 423] x 100
Subtract the new number by the original number
434 - 423 = 11
11 ÷ 423 = 0.026004728132387706
0.026004728132387706 x 100 = 2.6%