48.6% is the change from 430 to 639
Calculation steps:
[( 639 - 430 ) ÷ 430] x 100 = 48.6%
Formula
Percentage change = [(639 - 430) / 430] x 100
Subtract the new number by the original number
639 - 430 = 209
209 ÷ 430 = 0.48604651162790696
0.48604651162790696 x 100 = 48.6%