3583.33% is the change from 18 to 663
Calculation steps:
[( 663 - 18 ) ÷ 18] x 100 = 3583.33%
Formula
Percentage change = [(663 - 18) / 18] x 100
Subtract the new number by the original number
663 - 18 = 645
645 ÷ 18 = 35.833333333333336
35.833333333333336 x 100 = 3583.33%