How are these numbers calculated?

Big Games

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

Week of 11/13100.0*Serie C100.0*Average seed
Atletico-GO 3 Macae 4 +6.7
Vitoria 1 Ceara 0 -3.7
+0.2
Oeste 1 Criciuma 1 -0.4
-0.2
Parana 1 America-MG 0 +0.4
-0.2
Week of 11/20100.0*Serie C100.0*Average seed
Atletico-GO 3 Oeste 1 +14.7
-1.0
America-MG 1 Ceara 1 -7.5
+0.1
Macae 1 Boa Esporte 1 -0.8
+0.0
Paysandu 1 Criciuma 0 +0.1
Week of 11/27100.0*Serie C100.0*Average seed
Oeste 0 Paysandu 0 No
-0.2
Ceara 1 Macae 0 +4.3
+0.0
Bahia 1 Atletico-GO 0 +0.2
Criciuma 2 CRB 1 -0.1
Points
Chance Will Win Championship