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 -3.9
-0.3
Parana 1 Gremio 1 +3.0
+0.1
Sao Paulo 3 Vitoria 2 +2.2
+0.2
Sunday100.0*Chance in playoffs100.0*Average seed
Cruzeiro 2 Goias 0 +47.2
+2.3
Gremio 1 Atletico-MG 0 -9.5
-0.2
Ponte Preta 2 Fluminense 3 -9.5
Gama 4 Coritiba 0 +5.4
+0.3
Sao Caetano 3 Santos 2 +2.4
+0.1
Vitoria 4 Palmeiras 3 -0.4
Points
Chance Will Make Playoffs