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
Oeste 2 Figueirense 2 -0.3
-0.2
ABC 4 ASA 1 +0.3
-0.0
Guaratingueta 0 Ceara 1 -0.3
+0.1
Icasa 2 Paysandu 1 -0.2
+0.0
America-MG 3 Atletico-GO 0 -0.1
+0.0
Chapecoense 1 Bragantino 1 +0.1
-0.0
Avai 0 America-RN 1 -0.3
Palmeiras 3 Boa Esporte 0 +0.0
Week of 11/22100.0*Serie C100.0*Average seed
Oeste 2 Atletico-GO 4 +0.2
-0.8
Paysandu 0 Bragantino 1 No
-0.3
Guaratingueta 3 Parana 4 No
+0.1
ABC 1 Avai 0 -0.1
Sao Caetano 2 America-RN 2 -0.0
Week of 11/29100.0*Serie C100.0*Average seed
America-RN 2 Oeste 2 -0.5
America-MG 0 ABC 0 -0.1
Bragantino 1 Figueirense 1 +0.1
Points
Chance Will Win Championship