How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Serie B100.0*Average seed
Gremio 1 Ceara 3 +5.4
-0.1
Sao Paulo 3 America-MG 1 -1.6
+0.1
Bahia 0 Palmeiras 2 -1.2
Cruzeiro 1 Atletico-PR 1 -0.8
-0.1
Corinthians 2 Atletico-MG 1 -0.2
+0.1
Atletico-GO 0 Flamengo 0 +0.1
Week of 11/27100.0*Serie B100.0*Average seed
America-MG 2 Atletico-PR 1 -7.0
+0.1
Ceara 2 Cruzeiro 2 +2.2
-0.0
Santos 1 Bahia 1 +1.6
-0.0
Atletico-MG 4 Botafogo 0 +0.3
-0.1
Week of 12/4100.0*Serie B100.0*Average seed
Cruzeiro 6 Atletico-MG 1 No
+0.6
Bahia 2 Ceara 1 -19.7
+0.1
Atletico-PR 1 Coritiba 0 +14.6
-0.3
Points
Chance Will Win Championship