1777.78% is the change from 18 to 338
Calculation steps:
[( 338 - 18 ) ÷ 18] x 100 = 1777.78%
Formula
Percentage change = [(338 - 18) / 18] x 100
Subtract the new number by the original number
338 - 18 = 320
320 ÷ 18 = 17.77777777777778
17.77777777777778 x 100 = 1777.78%