Automatic sorting

This is probably quite easy but I can't find a very descriptive explanation on how it works.
I have a list of data covering 12 Columns, A:L, and 28 Rows including the Header Row.
Row L is a totals Column and I want the entire range to sort automatically Highest to Lowest based on the totals in Column L. (Obviously keeping the row data together)
Also the data range I want sorting is populated using formulas relating to other worksheets so there is no actual typing going into that worksheet.
I have seen some stuff online that talks about having code in the worksheet but it isn't that easy to follow if your range covers more than 2 columns.
All help gratefully received.

I think i know what you want , but let's be honest how many people are going to understand this without an example workbook.

Basically a lot of us are going to recognize what you want as the soccer spread sheets where the league table is auto updated each time a score is added for a game.