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*Libertadores100.0*Average seed
Atletico-PR 3 Vasco da Gama 1 -23.1
-1.1
Flamengo 3 Corinthians 0 -5.2
-0.2
Sport Recife 1 Bahia 0 +5.0
+0.2
Atletico-MG 3 Coritiba 0 -3.8
-0.1
Atletico-GO 1 Chapecoense 1 +1.4
+0.1
Sao Paulo 0 Botafogo 0 +1.4
+0.1
Week of 11/25100.0*Libertadores100.0*Average seed
Palmeiras 2 Botafogo 0 +6.7
+0.3
Fluminense 1 Sport Recife 2 +0.1
Week of 12/3100.0*Libertadores100.0*Average seed
Vasco da Gama 2 Ponte Preta 1 Yes
+1.1
Atletico-MG 4 Gremio 3 -17.7
-0.4
Chapecoense 2 Coritiba 1 -17.7
-0.4
Botafogo 2 Cruzeiro 2 -3.6
-0.1
Vitoria 1 Flamengo 2 -2.5
-0.3
Points
Chance Will Win Championship