How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Serie B100.0*Average seed
Coritiba 2 Palmeiras 0 -27.8
+1.0
Figueirense 2 Vitoria 0 -6.6
+0.1
Chapecoense 2 Botafogo 0 +4.9
-0.1
Bahia 1 Atletico-PR 2 -1.3
+0.1
Week of 11/29100.0*Serie B100.0*Average seed
Flamengo 4 Vitoria 0 -4.4
+0.1
Internacional 3 Palmeiras 1 -2.8
+0.1
Atletico-MG 1 Coritiba 2 No
+0.7
Atletico-PR 1 Goias 0 +0.1
Chapecoense 1 Cruzeiro 1 +0.0
Week of 12/6100.0*Serie B100.0*Average seed
Coritiba 3 Bahia 2 +0.5
Goias 4 Chapecoense 2 -0.1
Points
Chance Will Win Championship