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 -4.2
+0.1
Internacional 0 Fluminense 2 +2.8
-0.2
Palmeiras 2 Ipatinga 0 -0.8
+0.0
Week of 11/30100.0*Relegated100.0*Average seed
Nautico 2 Atletico-PR 1 -23.6
+1.1
Coritiba 0 Vasco da Gama 2 +11.5
-0.2
Botafogo 1 Figueirense 3 +11.1
-0.2
Portuguesa 2 Sport Recife 2 -1.6
+0.0
Atletico-MG 0 Santos 0 +0.5
-0.0
Ipatinga 1 Gremio 4 -0.1
Sao Paulo 1 Fluminense 1 +0.1
-0.0
Week of 12/7100.0*Relegated100.0*Average seed
Figueirense 3 Internacional 1 +12.4
-0.3
Santos 0 Nautico 0 -9.7
-0.3
Atletico-PR 5 Flamengo 3 +8.7
-0.4
Vasco da Gama 0 Vitoria 2 -5.3
+0.1
Fluminense 1 Ipatinga 1 +0.1
Points
Chance Will Win Championship