1227.78% is the change from 18 to 239
Calculation steps:
[( 239 - 18 ) ÷ 18] x 100 = 1227.78%
Formula
Percentage change = [(239 - 18) / 18] x 100
Subtract the new number by the original number
239 - 18 = 221
221 ÷ 18 = 12.277777777777779
12.277777777777779 x 100 = 1227.78%