47.27% is the change from 421 to 620
Calculation steps:
[( 620 - 421 ) ÷ 421] x 100 = 47.27%
Formula
Percentage change = [(620 - 421) / 421] x 100
Subtract the new number by the original number
620 - 421 = 199
199 ÷ 421 = 0.47268408551068886
0.47268408551068886 x 100 = 47.27%