How are these numbers calculated?

Big Games

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

Week of 5/11100.0*Average seed
Real Betis 0 Sevilla 2 +0.3
Atlético Madrid 1 Deportivo 0 -0.1
Athletic Bilbao 0 Racing 0 +0.0
Week of 5/17100.0*Average seed
Valencia 3 Atlético Madrid 1 +0.4
Sevilla 4 Athletic Bilbao 1 +0.1
Points
Chance Will Win Championship