98.03% is the change from 305 to 604
Calculation steps:
[( 604 - 305 ) ÷ 305] x 100 = 98.03%
Formula
Percentage change = [(604 - 305) / 305] x 100
Subtract the new number by the original number
604 - 305 = 299
299 ÷ 305 = 0.980327868852459
0.980327868852459 x 100 = 98.03%