3622.22% is the change from 18 to 670
Calculation steps:
[( 670 - 18 ) ÷ 18] x 100 = 3622.22%
Formula
Percentage change = [(670 - 18) / 18] x 100
Subtract the new number by the original number
670 - 18 = 652
652 ÷ 18 = 36.22222222222222
36.22222222222222 x 100 = 3622.22%