How are these numbers calculated?

Big Games

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

Week of 5/7100.0*UEFA CL100.0*Average seed
Alavés 1 Athletic Club 0 -3.8
-0.4
Barcelona 4 Villarreal 1 +0.5
+0.1
Atlético Madrid 1 Eibar 0 -0.5
Sevilla 1 Real Sociedad 1 -0.5
+0.1
Week of 5/14100.0*UEFA CL100.0*Average seed
Athletic Club 1 Leganés 1 -0.2
Villarreal 0 La Coruña 0 +0.1
Real Sociedad 2 Málaga 2 +0.0
Week of 5/17100.0*UEFA CL100.0*Average seed
Atlético Madrid 3 Athletic Club 1 -0.5
Valencia 1 Villarreal 3 -0.2
Celta de Vigo 2 Real Sociedad 2 -0.1
Points
Chance Will Win Championship