4394.44% is the change from 18 to 809
Calculation steps:
[( 809 - 18 ) ÷ 18] x 100 = 4394.44%
Formula
Percentage change = [(809 - 18) / 18] x 100
Subtract the new number by the original number
809 - 18 = 791
791 ÷ 18 = 43.94444444444444
43.94444444444444 x 100 = 4394.44%