How are these numbers calculated?

Big Games

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

Week of 11/23100.0*Libertadores100.0*Average seed
Atletico-MG 4 Goias 1 -13.8
-0.4
Atletico-PR 6 Nautico 1 -3.5
-0.1
Ponte Preta 1 Gremio 1 +1.4
+0.1
Criciuma 1 Vitoria 1 +1.2
+0.0
Sao Paulo 1 Botafogo 1 +1.2
+0.0
Week of 11/30100.0*Libertadores100.0*Average seed
Gremio 1 Goias 0 -17.6
-0.6
Coritiba 2 Botafogo 1 +17.1
+0.2
Santos 2 Atletico-PR 1 +1.6
+0.1
Fluminense 2 Atletico-MG 2 +0.9
+0.0
Vitoria 4 Flamengo 2 -0.8
-0.0
Week of 12/7100.0*Libertadores100.0*Average seed
Goias 0 Santos 3 -63.2
-1.4
Botafogo 3 Criciuma 0 -9.6
-0.2
Atletico-MG 2 Vitoria 2 +2.8
+0.1
Atletico-PR 5 Vasco da Gama 1 -0.1
Points
Chance Will Win Championship