56.62% is the change from 408 to 639
Calculation steps:
[( 639 - 408 ) ÷ 408] x 100 = 56.62%
Formula
Percentage change = [(639 - 408) / 408] x 100
Subtract the new number by the original number
639 - 408 = 231
231 ÷ 408 = 0.5661764705882353
0.5661764705882353 x 100 = 56.62%