199.01% is the change from 304 to 909
Calculation steps:
[( 909 - 304 ) ÷ 304] x 100 = 199.01%
Formula
Percentage change = [(909 - 304) / 304] x 100
Subtract the new number by the original number
909 - 304 = 605
605 ÷ 304 = 1.9901315789473684
1.9901315789473684 x 100 = 199.01%