2433.33% is the change from 18 to 456
Calculation steps:
[( 456 - 18 ) ÷ 18] x 100 = 2433.33%
Formula
Percentage change = [(456 - 18) / 18] x 100
Subtract the new number by the original number
456 - 18 = 438
438 ÷ 18 = 24.333333333333332
24.333333333333332 x 100 = 2433.33%