How are these numbers calculated?

Big Games

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

Week of 11/29100.0*Libertadores100.0*Average seed
Vitoria 1 Coritiba 0 -21.2
-0.5
Internacional 3 Flamengo 1 -10.1
-0.2
Juventude 1 Atletico-MG 0 +4.5
+0.1
Fluminense 2 Sao Caetano 1 +3.8
+0.2
Goias 3 Santos 0 -0.1
Ponte Preta 1 Sao Paulo 2 -0.1
Week of 12/6100.0*Libertadores100.0*Average seed
Fortaleza 2 Coritiba 2 -19.3
-0.4
Juventude 2 Sao Caetano 1 +13.7
+0.2
Internacional 1 Sao Paulo 1 +3.9
+0.1
Vitoria 0 Atletico-MG 1 -0.4
-0.1
Goias 0 Figueirense 3 +0.3
+0.0
Week of 12/13100.0*Libertadores100.0*Average seed
Coritiba 2 Criciuma 0 Yes
+0.9
Sao Caetano 5 Internacional 0 -6.4
-0.2
Atletico-MG 3 Goias 2 -6.4
-0.4
Points
Chance Will Win Championship