49.5% is the change from 604 to 903
Calculation steps:
[( 903 - 604 ) ÷ 604] x 100 = 49.5%
Formula
Percentage change = [(903 - 604) / 604] x 100
Subtract the new number by the original number
903 - 604 = 299
299 ÷ 604 = 0.49503311258278143
0.49503311258278143 x 100 = 49.5%