How are these numbers calculated?

Big Games

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

Week of 11/15100.0*Serie A100.0*Average seed
Guaratingueta 0 Ceara 1 -6.6
-0.2
Oeste 2 Figueirense 2 -4.2
-0.0
Sport Recife 2 Parana 0 -4.1
-0.1
Icasa 2 Paysandu 1 -4.0
-0.1
Avai 0 America-RN 1 +0.8
+0.2
Sao Caetano 3 Joinville 2 +0.6
+0.1
America-MG 3 Atletico-GO 0 -0.4
-0.1
Week of 11/22100.0*Serie A100.0*Average seed
Icasa 1 Chapecoense 2 +11.6
+0.3
Figueirense 2 ASA 0 +8.1
+0.5
Palmeiras 4 Ceara 1 +6.9
+0.2
Boa Esporte 2 Sport Recife 3 -4.8
-0.1
Joinville 2 America-MG 1 +0.5
+0.1
Week of 11/29100.0*Serie A100.0*Average seed
Ceara 0 Joinville 3 +26.2
+0.5
Bragantino 1 Figueirense 1 -10.4
-0.0
Parana 2 Icasa 0 +7.3
+0.3
Points
Chance Will Win Championship