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
Palmeiras 2 Ipatinga 0 +6.1
-0.6
Internacional 0 Fluminense 2 +1.6
-0.1
Vasco da Gama 1 Sao Paulo 2 -1.2
+0.1
Week of 11/30100.0*Relegated100.0*Average seed
Botafogo 1 Figueirense 3 Yes
-0.1
Ipatinga 1 Gremio 4 Yes
-0.3
Nautico 2 Atletico-PR 1 Yes
Coritiba 0 Vasco da Gama 2 +0.2
-0.1
Portuguesa 2 Sport Recife 2 -0.0
Week of 12/7None
Points
Chance Will Win Championship