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
Fluminense 2 Portuguesa 0 -2.1
-0.2
Sao Paulo 3 Vitoria 2 +1.6
+0.1
Parana 1 Gremio 1 -0.1
+0.0
Sunday100.0*Chance in playoffs100.0*Average seed
Gama 4 Coritiba 0 Out
-1.9
Ponte Preta 2 Fluminense 3 -7.7
-0.2
Gremio 1 Atletico-MG 0 -2.2
-0.2
Sao Caetano 3 Santos 2 +2.1
+0.2
Cruzeiro 2 Goias 0 -1.0
+0.0
Vitoria 4 Palmeiras 3 -0.8
-0.3
Points
Chance Will Make Playoffs