1727.78% is the change from 18 to 329
Calculation steps:
[( 329 - 18 ) ÷ 18] x 100 = 1727.78%
Formula
Percentage change = [(329 - 18) / 18] x 100
Subtract the new number by the original number
329 - 18 = 311
311 ÷ 18 = 17.27777777777778
17.27777777777778 x 100 = 1727.78%