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 +1.2
Corinthians 1 Fluminense 0 -1.2
+0.1
Week of 5/24100.0*Chance in playoffs100.0*Average seed
Palmeiras 1 Atletico-PR 0 +14.4
+1.8
Fluminense 1 Cruzeiro 1 -3.5
Bahia 0 Santos 2 -2.4
-0.2
Guarani 0 Atletico-MG 1 +1.7
-0.2
Flamengo 3 Goias 1 -1.1
-0.0
Internacional 0 Sport Recife 0 +0.5
+0.1
Cruzeiro 1 Portuguesa 1 +0.4
Week of 5/31100.0*Chance in playoffs100.0*Average seed
Sport Recife 0 Palmeiras 2 +38.1
+2.3
Guarani 2 Botafogo 1 -10.9
-0.4
Vasco da Gama 0 Santos 0 -7.2
-0.2
Sao Paulo 2 Nautico 0 -7.1
-0.2
Atletico-PR 0 Corinthians 1 -4.2
-0.1
Flamengo 2 Internacional 0 +3.6
+0.1
Atletico-MG 0 Paysandu 0 +0.3
Games Above .500
Chance Will Make Playoffs