How are these numbers calculated?

Big Games

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

Week of 11/21100.0*Serie B100.0*Average seed
Coritiba 1 Santos 0 -23.8
+0.7
Fluminense 3 Avai 1 -6.6
+0.1
Figueirense 0 Chapecoense 0 -2.2
+0.0
Joinville 1 Vasco da Gama 2 +1.7
-0.1
Atletico-MG 2 Goias 2 -1.3
+0.1
Week of 11/28100.0*Serie B100.0*Average seed
Palmeiras 0 Coritiba 2 -26.0
+0.7
Avai 1 Ponte Preta 0 +10.0
-0.2
Sao Paulo 3 Figueirense 2 -5.9
+0.2
Vasco da Gama 1 Santos 0 +4.5
-0.1
Chapecoense 1 Goias 3 +1.5
-0.1
Week of 12/6100.0*Serie B100.0*Average seed
Coritiba 0 Vasco da Gama 0 No
+0.1
Figueirense 1 Fluminense 0 +9.8
-0.2
Corinthians 1 Avai 1 -6.0
+0.2
Points
Chance Will Win Championship