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 -15.7
+1.2
Vasco da Gama 1 Sao Paulo 2 -2.6
+0.1
Palmeiras 2 Ipatinga 0 -1.0
+0.0
Week of 11/30100.0*Relegated100.0*Average seed
Coritiba 0 Vasco da Gama 2 +0.6
Botafogo 1 Figueirense 3 +0.5
Sao Paulo 1 Fluminense 1 -0.4
+0.0
Nautico 2 Atletico-PR 1 +0.1
+0.0
Atletico-MG 0 Santos 0 +0.1
Portuguesa 2 Sport Recife 2 -0.1
Week of 12/7100.0*Relegated100.0*Average seed
Atletico-PR 5 Flamengo 3 -0.4
Fluminense 1 Ipatinga 1 No
-0.3
Santos 0 Nautico 0 +0.2
Points
Chance Will Win Championship