Originally posted by orangutanNo. I don't mean that.
My Home -> My Home -> My performance
Filter the games to just show the tournament games, the bottom of the page will show win / loss / draw by colour and in total.
Look at this for example: http://www.chessbase.com/newsdetail.asp?newsid=4836
Look at the board under "2nd FIDE GP Sochi RUS 2008" (middle of the page), the column right to the Elo-column and the column right at the end.
That is the performance, absolute (right) and relative (with the + and -)