How are these numbers calculated?

Big Games

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

Week of 1/15100.0*Serie C100.0*Average seed
Guarani 1 Vitoria 2 -20.8
+0.7
CRB 5 Figueirense 1 -7.2
+0.2
Figueirense 3 Brasil de Pelotas 0 +6.5
-0.1
Vitoria 0 Chapecoense 0 +6.2
-0.3
Nautico 4 Oeste 1 +6.0
-0.2
Sampaio Correa 2 Parana 1 -5.1
+0.1
Ponte Preta 2 Nautico 0 -4.5
+0.1
Parana 0 Cuiaba 2 -3.6
+0.1
Botafogo-SP 1 CSA 3 -1.2
+0.1
America-MG 1 Botafogo-SP 1 -1.0
+0.0
Oeste 0 Confianca 1 +0.7
-0.1
Juventude 1 Cruzeiro 0 -0.2
Cruzeiro 2 Operario-PR 1 +0.1
Week of 1/22100.0*Serie C100.0*Average seed
Juventude 2 Figueirense 1 -11.1
+0.1
Vitoria 1 Botafogo-SP 0 No
+0.5
Oeste 1 Parana 0 -1.3
CSA 1 Brasil de Pelotas 1 -0.1
Cruzeiro 0 Nautico 0 +0.0
Week of 1/29100.0*Serie C100.0*Average seed
Brasil de Pelotas 0 Vitoria 1 +0.6
Nautico 1 CSA 1 +0.2
Chapecoense 3 Confianca 1 +0.1
Points
Chance Will Win Championship