29.71% is the change from 478 to 620
Calculation steps:
[( 620 - 478 ) ÷ 478] x 100 = 29.71%
Formula
Percentage change = [(620 - 478) / 478] x 100
Subtract the new number by the original number
620 - 478 = 142
142 ÷ 478 = 0.29707112970711297
0.29707112970711297 x 100 = 29.71%