3344.44% is the change from 18 to 620
Calculation steps:
[( 620 - 18 ) ÷ 18] x 100 = 3344.44%
Formula
Percentage change = [(620 - 18) / 18] x 100
Subtract the new number by the original number
620 - 18 = 602
602 ÷ 18 = 33.44444444444444
33.44444444444444 x 100 = 3344.44%