304.81% is the change from 104 to 421
Calculation steps:
[( 421 - 104 ) ÷ 104] x 100 = 304.81%
Formula
Percentage change = [(421 - 104) / 104] x 100
Subtract the new number by the original number
421 - 104 = 317
317 ÷ 104 = 3.048076923076923
3.048076923076923 x 100 = 304.81%