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 -2.0
-0.1
America-MG 3 Atletico-GO 0 +1.8
+0.6
Icasa 2 Paysandu 1 -1.3
-0.1
Sport Recife 2 Parana 0 -0.8
Avai 0 America-RN 1 +0.3
+0.3
Sao Caetano 3 Joinville 2 +0.2
Oeste 2 Figueirense 2 -0.0
Palmeiras 3 Boa Esporte 0 +0.0
Week of 11/22100.0*Serie A100.0*Average seed
Joinville 2 America-MG 1 No
-0.7
Figueirense 2 ASA 0 -0.5
-0.2
ABC 1 Avai 0 +0.2
Guaratingueta 3 Parana 4 -0.1
Week of 11/29100.0*Serie A100.0*Average seed
Ceara 0 Joinville 3 -0.5
Parana 2 Icasa 0 -0.5
America-MG 0 ABC 0 -0.2
Avai 1 Boa Esporte 0 -0.1
Points
Chance Will Win Championship