How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Thursday100.0*Chance in playoffs100.0*Average seed
Sao Paulo 3 Vitoria 2 -18.5
-1.5
Fluminense 2 Portuguesa 0 -2.9
-0.2
Parana 1 Gremio 1 -0.7
-0.0
Guarani 2 Botafogo 0 -0.1
Sunday100.0*Chance in playoffs100.0*Average seed
Vitoria 4 Palmeiras 3 +2.5
+2.1
Cruzeiro 2 Goias 0 Out
-0.1
Ponte Preta 2 Fluminense 3 Out
+0.2
Gama 4 Coritiba 0 +0.8
+0.1
Corinthians 1 Vasco da Gama 1 +0.2
Flamengo 2 Guarani 2 +0.2
Points
Chance Will Make Playoffs