1605.56% is the change from 18 to 307
Calculation steps:
[( 307 - 18 ) ÷ 18] x 100 = 1605.56%
Formula
Percentage change = [(307 - 18) / 18] x 100
Subtract the new number by the original number
307 - 18 = 289
289 ÷ 18 = 16.055555555555557
16.055555555555557 x 100 = 1605.56%