3305.56% is the change from 18 to 613
Calculation steps:
[( 613 - 18 ) ÷ 18] x 100 = 3305.56%
Formula
Percentage change = [(613 - 18) / 18] x 100
Subtract the new number by the original number
613 - 18 = 595
595 ÷ 18 = 33.05555555555556
33.05555555555556 x 100 = 3305.56%