2538.89% is the change from 18 to 475
Calculation steps:
[( 475 - 18 ) ÷ 18] x 100 = 2538.89%
Formula
Percentage change = [(475 - 18) / 18] x 100
Subtract the new number by the original number
475 - 18 = 457
457 ÷ 18 = 25.38888888888889
25.38888888888889 x 100 = 2538.89%