4.9% is the change from 429 to 450
Calculation steps:
[( 450 - 429 ) ÷ 429] x 100 = 4.9%
Formula
Percentage change = [(450 - 429) / 429] x 100
Subtract the new number by the original number
450 - 429 = 21
21 ÷ 429 = 0.04895104895104895
0.04895104895104895 x 100 = 4.9%