How are these numbers calculated?

Big Games

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

Week of 5/23100.0*Chance in playoffs100.0*Average seed
Paysandu 3 Sao Paulo 0 +2.7
+0.2
Corinthians 1 Fluminense 0 -2.6
-0.1
Week of 5/24100.0*Chance in playoffs100.0*Average seed
Flamengo 3 Goias 1 +31.9
+2.2
Bahia 0 Santos 2 -5.0
-0.3
Internacional 0 Sport Recife 0 +2.8
+0.2
Guarani 0 Atletico-MG 1 +2.5
+0.0
Fluminense 1 Cruzeiro 1 -2.4
+0.1
Palmeiras 1 Atletico-PR 0 -1.7
-0.1
Cruzeiro 1 Portuguesa 1 +0.2
+0.1
Week of 5/31100.0*Chance in playoffs100.0*Average seed
Flamengo 2 Internacional 0 In
+2.0
Guarani 2 Botafogo 1 -8.3
-0.4
Sport Recife 0 Palmeiras 2 -8.3
-0.2
Sao Paulo 2 Nautico 0 -6.5
-0.3
Atletico-PR 0 Corinthians 1 -4.8
-0.3
Vasco da Gama 0 Santos 0 -3.4
+0.1
Games Above .500
Chance Will Make Playoffs