How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 5/24100.0*Average seed
Gimnastic 3 Elche 3 +0.0
Week of 5/31100.0*Average seed
Alcorcon 0 Gimnastic 1 -0.3
Cordoba 2 Osasuna 3 -0.0
Week of 6/8100.0*Average seed
Gimnastic 1 Lugo 1 +0.3
Deportivo 2 Cordoba 0 -0.1
Points
Chance Will Win Championship