[R] Percentile rank for each element in list

[mic]

Heeeelp

Given this data
 x <- c(1,5,100,300,250,200,550,900,1000)
> quantile(x)
  0%  25%  50%  75% 100%
   1  100  250  550 1000

When I run the quantile, I can only know the value of the nth
percentile

I want to know what's the percentile position of each items in the
list
Sample
1 = 100% on the list has 1 or more
5 = more than x% on the list has 5 or more
100  = more than x% on the list has 100 or more
250 = more than 50% on the list has 250 or more
etc....

Thanks in advance