1183.33% is the change from 18 to 231
Calculation steps:
[( 231 - 18 ) ÷ 18] x 100 = 1183.33%
Formula
Percentage change = [(231 - 18) / 18] x 100
Subtract the new number by the original number
231 - 18 = 213
213 ÷ 18 = 11.833333333333334
11.833333333333334 x 100 = 1183.33%