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 -18.3
+1.0
Ponte Preta 1 Bahia 3 +5.1
-0.2
Vasco da Gama 2 America-RN 1 -4.3
+0.1
Vila Nova 2 Fortaleza 1 -1.1
-0.0
Parana 3 Campinense 0 +0.4
-0.1
ABC 6 Brasiliense 2 -0.3
+0.1
Sao Caetano 0 Juventude 0 +0.0
Week of 11/21100.0*Serie C100.0*Average seed
America-RN 1 Ipatinga 0 +24.1
-1.4
Juventude 1 Atletico-GO 3 -6.1
+0.2
Bragantino 1 Brasiliense 2 +1.2
-0.2
Bahia 2 Guarani 0 +1.2
-0.2
Fortaleza 1 Sao Caetano 2 -0.1
Figueirense 1 Duque de Caxias 2 -0.1
Week of 11/27100.0*Serie C100.0*Average seed
Guarani 2 Juventude 1 No
+0.3
Ipatinga 2 Vasco da Gama 0 No
+0.6
Ceara 0 America-RN 0 +3.5
+0.1
Points
Chance Will Win Championship