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*Average seed
Atletico-MG 3 America-RN 2 In
+0.4
Internacional 4 Flamengo 0 -0.0
Portuguesa 1 Goias 2 +0.2
Criciuma 3 Vasco da Gama 4 -0.0
Week of 11/1100.0*Chance in playoffs100.0*Average seed
Parana 1 Atletico-MG 0 -0.5
Vasco da Gama 2 Atletico-MG 0 -0.3
Corinthians 1 Flamengo 0 +0.3
Portuguesa 2 Criciuma 2 +0.1
Atletico-PR 2 Internacional 1 +0.1
Vasco da Gama 3 Bahia 1 -0.0
Flamengo 1 Coritiba 0 -0.0
Week of 11/8100.0*Chance in playoffs100.0*Average seed
Atletico-MG 3 Vitoria 2 +0.5
Botafogo 3 Portuguesa 3 +0.0
Points
Chance Will Make Playoffs