104.28% is the change from 304 to 621
Calculation steps:
[( 621 - 304 ) ÷ 304] x 100 = 104.28%
Formula
Percentage change = [(621 - 304) / 304] x 100
Subtract the new number by the original number
621 - 304 = 317
317 ÷ 304 = 1.042763157894737
1.042763157894737 x 100 = 104.28%