How are these numbers calculated?

Big Games

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

Week of 10/23100.0*Chance in playoffs100.0*Average seed
Parana 4 Atletico-MG 1 +3.8
+0.2
Portuguesa 2 Flamengo 3 -2.7
-0.1
Vitoria 2 Parana 0 -2.4
-0.1
Coritiba 2 Palmeiras 1 +2.3
+0.1
Flamengo 0 Cruzeiro 2 +2.0
+0.0
Ponte Preta 2 Portuguesa 1 -1.0
-0.1
Gama 1 Coritiba 1 +0.9
+0.1
Juventude 2 Vasco da Gama 1 +0.4
+0.1
Atletico-PR 2 Corinthians 2 +0.1
+0.0
Week of 10/30100.0*Chance in playoffs100.0*Average seed
Parana 1 Sao Paulo 2 +20.0
+1.3
Sao Paulo 1 Ponte Preta 0 +12.4
+1.5
Corinthians 0 Atletico-MG 4 -4.0
-0.2
Vasco da Gama 2 Atletico-PR 1 +1.9
-0.0
Palmeiras 0 Guarani 0 +1.4
+0.1
Guarani 1 Vitoria 2 +0.9
Santos 2 Gremio 1 -0.1
Cruzeiro 2 Botafogo-SP 1 -0.1
-0.1
Cruzeiro 2 Vasco da Gama 1 +0.1
Week of 11/7100.0*Chance in playoffs100.0*Average seed
Vitoria 0 Sao Paulo 3 In
+2.4
Internacional 1 Palmeiras 0 +17.4
+0.4
Atletico-MG 2 Gremio 0 -13.7
-0.3
Juventude 3 Flamengo 1 +7.8
+0.2
Flamengo 0 Santos 1 +5.8
+0.2
Corinthians 1 Ponte Preta 2 -5.1
-0.3
Santos 3 Cruzeiro 3 +3.1
+0.1
Corinthians 3 Coritiba 2 +2.7
+0.1
Coritiba 1 Juventude 1 +1.8
+0.1
Sport Recife 1 Vitoria 1 +0.2
Botafogo 1 Guarani 0 +0.2
Ponte Preta 0 Gama 0 -0.1
Points
Chance Will Make Playoffs