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
Madureira 1 Bonsucesso 1 -10.4
-9.8
-0.6
Volta Redonda 0 Madureira 3 +5.2
+12.4
+0.6
Flamengo 2 Vasco da Gama 1 +4.1
-1.5
-0.0
Barra Mansa 1 Botafogo 1 +3.4
+0.4
+0.1
Flamengo 2 Bangu 1 -2.4
-0.8
-0.1
Cabofriense 0 Botafogo 1 -1.3
-0.4
-0.1
Boavista 1 Vasco da Gama 2 -1.1
-0.6
-0.1
Fluminense 1 Tigres do Brasil 1 +0.2
+4.4
+0.1
Fluminense 3 Cabofriense 0 -4.5
-0.1
Macae 1 Bangu 1 +1.7
+0.1
Resende 2 Macae 2 +1.6
Volta Redonda 1 Tigres do Brasil 1 +0.2
Week of 3/28100.0*Chance wins title100.0*Semi-Final100.0*Average seed
Madureira 1 Macae 0 +4.4
+11.5
+0.4
Vasco da Gama 1 Botafogo 1 +1.8
-0.5
Bonsucesso 0 Flamengo 2 -1.6
-0.7
-0.1
Fluminense 4 Barra Mansa 2 -4.9
-0.1
Week of 4/4100.0*Chance wins title100.0*Semi-Final100.0*Average seed
Botafogo 4 Madureira 1 -11.1
-14.6
-0.9
Flamengo 3 Fluminense 0 -7.6
+4.5
-0.0
Friburguense 5 Vasco da Gama 4 +2.9
+4.3
+0.4
Madureira 1 Fluminense 2 -62.3
-1.1
Vasco da Gama 4 Volta Redonda 1 -3.0
-0.2
Botafogo 1 Macae 0 -0.0
Points
Chance Will Win Championship