1244.44% is the change from 18 to 242
Calculation steps:
[( 242 - 18 ) ÷ 18] x 100 = 1244.44%
Formula
Percentage change = [(242 - 18) / 18] x 100
Subtract the new number by the original number
242 - 18 = 224
224 ÷ 18 = 12.444444444444445
12.444444444444445 x 100 = 1244.44%