How are these numbers calculated?

Big Games

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

Week of 10/24100.0*Chance in playoffs100.0*Average seed
Sao Paulo 1 Corinthians 2 In
+0.6
Sport Recife 2 Botafogo 1 -0.1
Portuguesa 1 Internacional 1 +0.1
Coritiba 1 Atletico-MG 1 +0.1
Santos 1 Parana 2 +0.2
Vasco da Gama 3 Coritiba 1 +0.2
Cruzeiro 3 Palmeiras 1 +0.1
America-RN 2 Santos 2 +0.1
Week of 10/31100.0*Chance in playoffs100.0*Average seed
Vitoria 2 Corinthians 3 +0.5
Palmeiras 3 Parana 2 -0.1
Week of 11/7100.0*Chance in playoffs100.0*Average seed
America-MG 1 Palmeiras 1 +0.4
Palmeiras 2 Vasco da Gama 1 -0.3
Corinthians 2 America-RN 1 +0.2
Botafogo 2 Santos 1 +0.1
Points
Chance Will Make Playoffs