98.68% is the change from 304 to 604
Calculation steps:
[( 604 - 304 ) ÷ 304] x 100 = 98.68%
Formula
Percentage change = [(604 - 304) / 304] x 100
Subtract the new number by the original number
604 - 304 = 300
300 ÷ 304 = 0.9868421052631579
0.9868421052631579 x 100 = 98.68%