1222.22% is the change from 18 to 238
Calculation steps:
[( 238 - 18 ) ÷ 18] x 100 = 1222.22%
Formula
Percentage change = [(238 - 18) / 18] x 100
Subtract the new number by the original number
238 - 18 = 220
220 ÷ 18 = 12.222222222222221
12.222222222222221 x 100 = 1222.22%