How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 10/24100.0*Serie B100.0*Average seed
Bragantino 1 Juventude 0 -10.9
+0.7
Ponte Preta 2 Bragantino 2 +5.1
-0.2
America-MG 2 Atletico-PR 1 +3.8
-0.2
Santos 1 Parana 2 +3.1
-0.3
Goias 2 Juventude 2 -1.1
+0.0
Gremio 2 America-RN 1 -0.2
+0.1
Week of 10/31100.0*Serie B100.0*Average seed
Portuguesa 3 Bragantino 1 +10.9
-0.6
Flamengo 2 America-MG 0 -4.0
+0.1
America-RN 0 Ponte Preta 1 +3.9
-0.1
Santos 3 Goias 1 -1.8
+0.1
Palmeiras 3 Parana 2 -1.8
+0.1
Week of 11/7100.0*Serie B100.0*Average seed
Bragantino 0 Vitoria 0 Yes
-0.6
Parana 2 Flamengo 1 Yes
-0.2
America-MG 1 Palmeiras 1 +5.2
-0.1
Goias 2 Vasco da Gama 2 -3.8
+0.1
Points
Chance Will Make Playoffs