How are these numbers calculated?

Big Games

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

Week of 11/23100.0*Relegated100.0*Average seed
Internacional 0 Fluminense 2 +1.3
Vasco da Gama 1 Sao Paulo 2 -0.8
+0.1
Palmeiras 2 Ipatinga 0 -0.2
+0.1
Week of 11/30100.0*Relegated100.0*Average seed
Portuguesa 2 Sport Recife 2 +3.8
Nautico 2 Atletico-PR 1 +2.6
-0.0
Coritiba 0 Vasco da Gama 2 +2.0
-0.3
Botafogo 1 Figueirense 3 +1.9
-0.3
Atletico-MG 0 Santos 0 +0.2
Sao Paulo 1 Fluminense 1 +0.1
Ipatinga 1 Gremio 4 +0.1
Week of 12/7100.0*Relegated100.0*Average seed
Cruzeiro 4 Portuguesa 1 -0.2
Vasco da Gama 0 Vitoria 2 +0.1
Figueirense 3 Internacional 1 -0.1
Points
Chance Will Win Championship