How are these numbers calculated?

Big Games

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

Week of 11/11100.0*Serie C100.0*Average seed
Bragantino 1 Vasco da Gama 2 +5.7
-0.4
Goias 3 Joinville 2 -1.5
+0.1
Brasil de Pelotas 1 Oeste 1 -0.5
Parana 1 Criciuma 2 -0.4
Atletico-GO 5 Tupi 3 -0.2
+0.1
Sampaio Correa 1 Londrina 3 +0.0
Week of 11/18100.0*Serie C100.0*Average seed
Bahia 3 Bragantino 2 Yes
-0.3
Oeste 0 Joinville 2 -2.1
-0.2
Tupi 1 Nautico 4 +0.2
Week of 11/25100.0*Serie C100.0*Average seed
Parana 0 Tupi 2 -0.4
Bragantino 0 Londrina 1 -0.4
Points
Chance Will Win Championship