504.04% is the change from 99 to 598
Calculation steps:
[( 598 - 99 ) ÷ 99] x 100 = 504.04%
Formula
Percentage change = [(598 - 99) / 99] x 100
Subtract the new number by the original number
598 - 99 = 499
499 ÷ 99 = 5.040404040404041
5.040404040404041 x 100 = 504.04%