51.96% is the change from 408 to 620
Calculation steps:
[( 620 - 408 ) ÷ 408] x 100 = 51.96%
Formula
Percentage change = [(620 - 408) / 408] x 100
Subtract the new number by the original number
620 - 408 = 212
212 ÷ 408 = 0.5196078431372549
0.5196078431372549 x 100 = 51.96%