title: Percentile rank of column values - R
body: <p>I am looking for a percentage rank for each value in a column.</p>
  
  <p>It is quite easy in Excel, for example:</p>
  
  <p>=RANK.EQ(A1,$A$1:$A$100,1)/COUNT($A$1:$A$100)</p>
  
  <p>Returns a percent value in a new column that ranks the column I referred to above.</p>
  
  <p>I have no problem finding quantile in R, but have not been able to find anything that accurately gives <strong>percentile</strong> for every single column value.</p>