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
Ipatinga 1 Atletico-GO 0 +5.1
-0.3
Ponte Preta 1 Bahia 3 +3.9
-0.2
Vasco da Gama 2 America-RN 1 -1.8
+0.1
Vila Nova 2 Fortaleza 1 -1.6
-0.1
Sao Caetano 0 Juventude 0 -1.0
-0.4
Parana 3 Campinense 0 +0.1
-0.1
ABC 6 Brasiliense 2 +0.1
Week of 11/21100.0*Serie C100.0*Average seed
Juventude 1 Atletico-GO 3 +14.6
-0.8
America-RN 1 Ipatinga 0 +14.4
-0.1
Bahia 2 Guarani 0 +2.0
-0.3
Bragantino 1 Brasiliense 2 +0.1
-0.2
Figueirense 1 Duque de Caxias 2 -0.1
Week of 11/27100.0*Serie C100.0*Average seed
Guarani 2 Juventude 1 Yes
-0.5
Ipatinga 2 Vasco da Gama 0 +17.6
-0.3
Ceara 0 America-RN 0 -1.2
+0.1
Points
Chance Will Win Championship