How are these numbers calculated?

Big Games

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

Week of 3/22100.0*Chance in playoffs100.0*Average seed
Bangu 0 Botafogo 2 +12.2
+0.8
Botafogo 2 Fluminense 3 -7.8
-0.3
Volta Redonda 2 Nova Iguacu 1 +4.8
+0.0
Nova Iguacu 0 Portuguesa 0 +4.5
+0.1
Flamengo 2 Vasco da Gama 2 -3.6
-0.1
Vasco da Gama 1 Madureira 0 -1.1
-0.0
Portuguesa 2 Madureira 0 +1.1
+0.1
Boavista 1 Volta Redonda 0 +0.8
+0.1
Resende 0 Boavista 1 -0.2
Macae 1 Resende 2 -0.1
-0.0
Flamengo 3 Bangu 0 +0.0
If winner is:HomeDrawAway
Week of 3/29100.0*Chance in playoffs100.0*Average seed
Botafogo vs Resende+21.7-12.5-23.7
+0.7-0.2-0.9
Portuguesa vs Botafogo-24.4-13.8+19.7
-1.0-0.2+0.6
Vasco da Gama vs Boavista-15.0+12.1+15.7
-0.1+0.2+0.1
Nova Iguacu vs Vasco da Gama+8.4+12.8-16.3
-0.0+0.2-0.1
Resende vs Nova Iguacu+5.1+4.7-7.0
+0.1+0.1-0.2
Volta Redonda vs Flamengo-4.9+0.6+0.6
-0.3+0.0+0.1
Boavista vs Portuguesa-1.3+1.0+1.0
-0.1+0.1+0.0
Madureira vs Fluminense-1.5+0.2+0.2
-0.2-0.0+0.0
Macae vs Volta Redonda+0.6+0.6-0.5
+0.1+0.1-0.1
Madureira vs Bangu-0.1+0.2+0.2
-0.0+0.0+0.1

What If

Chances based on how well the Botafogo finish out the regular season.   Explain

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs123456789101112Count
202-0-081.5%821814,166,320
181-1-039.039583014,180,431
171-0-118.51964171016,638,638
160-2-04.7550386003,554,898
150-1-1Out1542321018,309,221
140-0-2Out18283921404,867,500
Total:32.9%3340147420061,717,008
Points
Chance Will Make Playoffs