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
Parana 1 Gremio 1 +3.4
+0.1
Fluminense 2 Portuguesa 0 -2.6
-0.2
Sao Paulo 3 Vitoria 2 +1.9
+0.1
Sunday100.0*Chance in playoffs100.0*Average seed
Cruzeiro 2 Goias 0 +35.5
+1.9
Ponte Preta 2 Fluminense 3 -17.9
-0.1
Gremio 1 Atletico-MG 0 -10.4
-0.3
Gama 4 Coritiba 0 +8.7
+0.4
Sao Caetano 3 Santos 2 +1.2
+0.0
Vitoria 4 Palmeiras 3 -0.2
Points
Chance Will Make Playoffs