121.03% is the change from 409 to 904
Calculation steps:
[( 904 - 409 ) ÷ 409] x 100 = 121.03%
Formula
Percentage change = [(904 - 409) / 409] x 100
Subtract the new number by the original number
904 - 409 = 495
495 ÷ 409 = 1.2102689486552567
1.2102689486552567 x 100 = 121.03%