33.96% is the change from 477 to 639
Calculation steps:
[( 639 - 477 ) ÷ 477] x 100 = 33.96%
Formula
Percentage change = [(639 - 477) / 477] x 100
Subtract the new number by the original number
639 - 477 = 162
162 ÷ 477 = 0.33962264150943394
0.33962264150943394 x 100 = 33.96%