How are these numbers calculated?

Big Games

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

Week of 11/20100.0*Serie A100.0*Average seed
Brasil de Pelotas 2 Atletico-GO 2 -2.4
-0.1
Sport Recife 2 Ponte Preta 1 -0.2
-0.1
Week of 11/24100.0*Serie A100.0*Average seed
Coritiba 1 Bragantino 0 -14.6
-0.2
Week of 11/29100.0*Serie A100.0*Average seed
America-MG 1 Sao Bento 2 +23.8
+0.3
Vitoria 1 Coritiba 2 -5.5
-0.1
Atletico-GO 0 Sport Recife 0 -0.2
-0.1
Points
Chance Will Win Championship