How are these numbers calculated?

Big Games

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

Week of 5/23100.0*Serie B100.0*Average seed
Paysandu 3 Sao Paulo 0 +3.0
-0.4
Week of 5/24100.0*Serie B100.0*Average seed
Bahia 0 Santos 2 -4.3
+0.1
Flamengo 3 Goias 1 -2.9
+0.1
Nautico 1 Vasco da Gama 1 +2.7
-0.1
Cruzeiro 1 Portuguesa 1 +1.6
-0.0
Week of 5/31100.0*Serie B100.0*Average seed
Sao Paulo 2 Nautico 0 Yes
-0.7
Bragantino 0 Bahia 0 -1.2
+0.0
Atletico-MG 0 Paysandu 0 -1.2
-0.1
Goias 1 Portuguesa 1 -0.3
+0.1
Games Above .500
Chance Will Make Playoffs