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
Guaratingueta 0 Ceara 1 +15.0
-0.9
America-MG 3 Atletico-GO 0 -6.5
+0.1
ABC 4 ASA 1 +4.4
-0.2
Icasa 2 Paysandu 1 -3.3
+0.1
Avai 0 America-RN 1 +2.2
-0.2
Chapecoense 1 Bragantino 1 -0.4
+0.1
Oeste 2 Figueirense 2 +0.3
-0.0
Week of 11/22100.0*Serie C100.0*Average seed
Guaratingueta 3 Parana 4 +22.9
-0.8
Oeste 2 Atletico-GO 4 +8.9
-0.1
Paysandu 0 Bragantino 1 -5.3
-0.0
ABC 1 Avai 0 +1.9
-0.2
Sao Caetano 2 America-RN 2 +0.0
Week of 11/29100.0*Serie C100.0*Average seed
Atletico-GO 2 Guaratingueta 0 Yes
-0.8
Sport Recife 0 Paysandu 0 -4.3
+0.2
Points
Chance Will Win Championship