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 C100.0*Average seed
Avai 0 America-RN 1 -8.5
+1.0
ABC 4 ASA 1 +3.5
-0.2
Icasa 2 Paysandu 1 -2.9
+0.1
America-MG 3 Atletico-GO 0 -2.5
+0.1
Guaratingueta 0 Ceara 1 -1.7
+0.2
Chapecoense 1 Bragantino 1 +0.1
+0.0
Oeste 2 Figueirense 2 +0.1
Week of 11/22100.0*Serie C100.0*Average seed
Paysandu 0 Bragantino 1 No
-0.2
Guaratingueta 3 Parana 4 No
+0.1
Sao Caetano 2 America-RN 2 No
-0.1
ABC 1 Avai 0 +0.1
-0.2
Oeste 2 Atletico-GO 4 +0.2
Week of 11/29100.0*Serie C100.0*Average seed
America-RN 2 Oeste 2 +0.8
America-MG 0 ABC 0 -0.0
Bragantino 1 Figueirense 1 +0.0
Points
Chance Will Win Championship