How are these numbers calculated?

Big Games

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

Week of 10/25100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Santos 3 Bahia 1 Out
+6.5
-1.8
Coritiba 0 Atletico-PR 2 +5.2
-0.1
Fluminense 2 Criciuma 0 -1.9
+0.1
Criciuma 3 Vasco da Gama 4 -1.5
+0.2
Guarani 0 Juventude 0 -1.4
+0.0
Sport Recife 2 Bragantino 1 -1.2
Portuguesa 1 Goias 2 +0.9
-0.2
Vitoria 1 Cruzeiro 1 +0.2
+0.1
Sao Paulo 7 Uniao Sao Joao 1 -0.2
Palmeiras 5 Gremio 1 +0.1
Botafogo 0 Parana 0 +0.0
Week of 11/1100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Vasco da Gama 3 Bahia 1 +13.4
-1.7
Corinthians 1 Flamengo 0 +10.6
-0.3
Uniao Sao Joao 0 Guarani 1 +8.1
-0.2
Atletico-PR 2 Internacional 1 +4.4
-0.2
Bragantino 1 Uniao Sao Joao 0 +3.0
-0.2
Portuguesa 2 Criciuma 2 -2.3
+0.1
Corinthians 0 Sport Recife 1 -2.1
+0.1
Juventude 1 Fluminense 1 -2.1
+0.1
Gremio 1 Guarani 4 +1.8
+0.1
Cruzeiro 2 Botafogo 3 -0.1
+0.1
Flamengo 1 Coritiba 0 -0.1
+0.2
Parana 1 Atletico-MG 0 -0.1
Juventude 2 Bragantino 1 +0.1
Palmeiras 3 Goias 3 -0.0
Week of 11/8100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Guarani 3 Vasco da Gama 2 +14.8
-0.3
Bahia 0 Juventude 0 +14.1
-1.3
Criciuma 1 Atletico-PR 1 -0.2
-0.2
Goias 0 Corinthians 2 -0.2
Coritiba 2 America-RN 0 -0.2
Internacional 7 Bragantino 0 +0.1
Fluminense 0 Gremio 2 -0.1
Santos 2 Cruzeiro 2 +0.1
Points
Chance Will Make Playoffs