How are these numbers calculated?

Big Games

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

Week of 3/21100.0*Chance wins title100.0*Semi-Final100.0*Average seed
Fluminense 1 Tigres do Brasil 1 -1.7
-15.8
-0.6
Fluminense 3 Cabofriense 0 +0.3
+8.4
+0.3
Barra Mansa 1 Botafogo 1 +0.2
+1.2
+0.0
Flamengo 2 Vasco da Gama 1 +0.2
-5.1
-0.1
Boavista 1 Vasco da Gama 2 -0.2
-1.2
-0.0
Volta Redonda 0 Madureira 3 -0.1
-3.4
-0.0
Madureira 1 Bonsucesso 1 +0.1
+4.9
+0.1
Cabofriense 0 Botafogo 1 -0.1
-1.5
-0.0
Flamengo 2 Bangu 1 -0.1
-2.4
-0.0
Macae 1 Bangu 1 +1.6
+0.1
Resende 2 Macae 2 +0.9
+0.1
Volta Redonda 1 Tigres do Brasil 1 +0.2
+0.1
Week of 3/28100.0*Chance wins title100.0*Semi-Final100.0*Average seed
Vasco da Gama 1 Botafogo 1 +0.5
-0.5
Bonsucesso 0 Flamengo 2 -0.3
-0.9
-0.0
Fluminense 4 Barra Mansa 2 +0.2
+8.5
+0.2
Madureira 1 Macae 0 -6.7
-0.0
Week of 4/5100.0*Chance wins title100.0*Semi-Final100.0*Average seed
Flamengo 3 Fluminense 0 No
-13.1
-0.4
Friburguense 5 Vasco da Gama 4 +0.9
+6.6
+0.2
Botafogo 4 Madureira 1 -0.6
+1.6
-0.0
Madureira 1 Fluminense 2 Yes
+1.1
Vasco da Gama 4 Volta Redonda 1 -0.1
Botafogo 1 Macae 0 +0.1
Points
Chance Will Win Championship