as stated in
Code:
http://www.topeleven.com/news/live-match-supporters/
Crowd: This is the part where only home team can gain some extra possession percentage. The only condition for this is to have 60% full stadium.
Here is the list of attendance-ball possession ratio:

1% for 60%
2% for 70%
3% for 80%
4% for 90%
5% ball possession gained for the 100% full stadium.

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this game had around 25% so it should be 0% right? unless there was change which i didn't know