How are these numbers calculated?

Big Games

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

Week of 11/10100.0*Chance in playoffs100.0*Average seed
war 93.5 wel 84.5 -14.1
-0.9
con 109 mcn 62 +1.9
she 90.5 pin 83.5 +1.7
+0.1
thi 115 sco 92.5 +0.8
tai 92 arn 71 -0.7
tot 99 dav 116 -0.6
If winner is:HomeAway
Week of 11/17100.0*Chance in playoffs100.0*Average seed
wel vs she+14.6-18.4
+0.7-0.8
mcn vs war-4.7+4.5
-0.1+0.1
pin vs tot-2.3+2.5
-0.1+0.1
arn vs thi-2.2+1.8
-0.1+0.1
sco vs con-0.4+0.3
dav vs tai+0.3-0.3

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-Lplayoffs123456789101112Count
02-261.3%0118423081010,714,030
3-198.00063442162007,794,441
1-37.307293821406,523,328
4-0In3173935602,123,868
0-40.0021130391721,486,821
Total:58.7%0151219221812731028,642,488
Points
Chance Will Make Playoffs