3588.89% is the change from 18 to 664
Calculation steps:
[( 664 - 18 ) ÷ 18] x 100 = 3588.89%
Formula
Percentage change = [(664 - 18) / 18] x 100
Subtract the new number by the original number
664 - 18 = 646
646 ÷ 18 = 35.888888888888886
35.888888888888886 x 100 = 3588.89%