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 +0.8
-0.3
Vasco da Gama 1 Sao Paulo 2 -0.5
+0.0
Palmeiras 2 Ipatinga 0 -0.1
Vitoria 4 Gremio 2 -0.1
Week of 11/30100.0*Relegated100.0*Average seed
Coritiba 0 Vasco da Gama 2 +1.7
Botafogo 1 Figueirense 3 +1.6
Atletico-MG 0 Santos 0 -1.6
-0.2
Nautico 2 Atletico-PR 1 -0.5
+0.0
Portuguesa 2 Sport Recife 2 -0.4
Sao Paulo 1 Fluminense 1 -0.0
Week of 12/7100.0*Relegated100.0*Average seed
Atletico-PR 5 Flamengo 3 +0.5
-0.5
Figueirense 3 Internacional 1 +0.4
Santos 0 Nautico 0 No
+0.3
Fluminense 1 Ipatinga 1 +0.1
Points
Chance Will Win Championship