1661.11% is the change from 18 to 317
Calculation steps:
[( 317 - 18 ) ÷ 18] x 100 = 1661.11%
Formula
Percentage change = [(317 - 18) / 18] x 100
Subtract the new number by the original number
317 - 18 = 299
299 ÷ 18 = 16.61111111111111
16.61111111111111 x 100 = 1661.11%