49.17% is the change from 421 to 628
Calculation steps:
[( 628 - 421 ) ÷ 421] x 100 = 49.17%
Formula
Percentage change = [(628 - 421) / 421] x 100
Subtract the new number by the original number
628 - 421 = 207
207 ÷ 421 = 0.4916864608076009
0.4916864608076009 x 100 = 49.17%