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
Vasco da Gama 1 Sao Paulo 2 -1.5
+0.1
Internacional 0 Fluminense 2 +1.3
-0.2
Palmeiras 2 Ipatinga 0 -0.2
Vitoria 4 Gremio 2 -0.1
Sport Recife 3 Atletico-MG 0 -0.1
Week of 11/30100.0*Relegated100.0*Average seed
Atletico-MG 0 Santos 0 -3.2
-0.2
Botafogo 1 Figueirense 3 +2.2
Coritiba 0 Vasco da Gama 2 +1.9
Portuguesa 2 Sport Recife 2 -1.0
Nautico 2 Atletico-PR 1 -0.6
+0.0
Sao Paulo 1 Fluminense 1 +0.1
+0.0
Week of 12/7100.0*Relegated100.0*Average seed
Figueirense 3 Internacional 1 +1.4
Atletico-PR 5 Flamengo 3 +1.4
-0.4
Santos 0 Nautico 0 No
+0.3
Fluminense 1 Ipatinga 1 +0.0
Points
Chance Will Win Championship