numbers

i once read it in an iq book and it mentioned it was one of the hardest numerical questions to figure out and that only about 10% of population can get it. i always wanted to see if that accurate.

here goes:

in the numerical sequence

8 5 4 9 1 6 3 2 0

going from left to right, explain the reason for the sequence.

{think outside the box}

first person with the correct answer gets two eprops...