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
Chapecoense 2 Botafogo 0 -16.7
+0.8
Figueirense 2 Vitoria 0 -3.8
+0.1
Coritiba 2 Palmeiras 0 +3.0
-0.0
Bahia 1 Atletico-PR 2 -1.4
+0.0
Cruzeiro 2 Goias 1 +0.0
Week of 11/29100.0*Serie B100.0*Average seed
Flamengo 4 Vitoria 0 No
+0.1
Internacional 3 Palmeiras 1 -0.7
+0.1
Atletico-MG 1 Coritiba 2 -0.3
Atletico-PR 1 Goias 0 +0.1
Chapecoense 1 Cruzeiro 1 -0.0
Week of 12/6100.0*Serie B100.0*Average seed
Goias 4 Chapecoense 2 -0.6
Coritiba 3 Bahia 2 -0.3
Points
Chance Will Win Championship