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*Chance wins title100.0*Libetadores100.0*Average seed
Atletico-PR 1 Cruzeiro 1 -0.3
-11.6
-0.4
Botafogo 3 Sao Paulo 2 +0.2
Flamengo 0 Goias 0 +0.1
Atletico-MG 0 Internacional 1 -2.6
+0.0
Santo Andre 4 Avai 2 +0.8
+0.2
Week of 11/29100.0*Chance wins title100.0*Libetadores100.0*Average seed
Goias 4 Sao Paulo 2 +0.1
+0.6
Cruzeiro 4 Coritiba 1 +18.2
+0.7
Corinthians 0 Flamengo 2 No
-1.5
-0.0
Sport Recife 1 Internacional 2 -2.6
-0.1
Palmeiras 3 Atletico-MG 1 -4.8
+0.1
Gremio 4 Barueri 2 -0.1
Avai 2 Santos 2 +0.0
Week of 12/5100.0*Chance wins title100.0*Libetadores100.0*Average seed
Botafogo 2 Palmeiras 1 +24.3
+0.3
Santos 1 Cruzeiro 2 +24.3
+0.3
Sao Paulo 4 Sport Recife 0 -5.6
-0.1
Internacional 4 Santo Andre 1 -0.8
Atletico-MG 0 Corinthians 3 +0.1
Points
Chance Will Win Championship