How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 11/15100.0*Chance in playoffs100.0*Average seed
Internacional 3 Santos 0 +18.2
+1.3
Flamengo 1 Internacional 0 -17.5
-1.3
Santos 1 Ponte Preta 2 -2.7
-0.1
Bahia 2 Gama 1 -2.3
-0.1
America-MG 1 Bahia 2 -2.2
-0.1
Vitoria 1 Goias 0 +2.1
+0.1
Ponte Preta 1 Juventude 0 -2.0
-0.1
Cruzeiro 1 Sao Paulo 4 -1.9
-0.2
Sao Paulo 3 Flamengo 1 -1.8
-0.1
Atletico-MG 2 Palmeiras 1 +1.7
+0.0
Parana 0 Fluminense 1 -1.5
-0.1
Goias 2 Coritiba 1 -1.4
-0.1
Palmeiras 1 Vasco da Gama 3 +1.4
+0.1
Portuguesa 1 Cruzeiro 3 +1.1
+0.1
Botafogo-SP 2 Vitoria 0 +0.4
Fluminense 0 Portuguesa 0 +0.4
+0.1
Gremio 1 Sao Caetano 2 +0.1
+0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Fluminense 2 Santos 1 -1.9
-0.2
Bahia 1 Coritiba 1 +1.2
+0.1
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Cruzeiro 4 Internacional 2 Out
-1.5
Sport Recife 0 Bahia 1 -11.8
-0.2
Sao Paulo 3 Atletico-MG 0 -10.8
-0.2
Parana 3 Goias 1 +0.3
Flamengo 2 Palmeiras 0 +0.3
Santos 2 Vasco da Gama 2 +0.1
Gremio 3 Portuguesa 1 +0.1
Points
Chance Will Make Playoffs