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
Cruzeiro 1 Atletico-PR 1 +10.3
-0.3
Gremio 1 Ceara 3 +4.2
-0.2
Bahia 0 Palmeiras 2 -1.5
Corinthians 2 Atletico-MG 1 -0.9
Sao Paulo 3 America-MG 1 -0.5
+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 +17.3
-0.7
Ceara 2 Cruzeiro 2 -9.1
+0.1
Santos 1 Bahia 1 +1.2
Atletico-MG 4 Botafogo 0 +0.8
Gremio 2 Atletico-GO 2 +0.1
Week of 12/4100.0*Serie B100.0*Average seed
Atletico-PR 1 Coritiba 0 -16.5
+0.9
Cruzeiro 6 Atletico-MG 1 Yes
-0.1
Bahia 2 Ceara 1 -5.2
+0.1
Atletico-GO 5 America-MG 1 +0.2
Points
Chance Will Win Championship