How are these numbers calculated?

Big Games

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

Week of 11/21100.0*Chance in playoffs100.0*Average seed
Halifax 74 Milwaukee 85 -17.5
-0.9
Detroit 84 Pittsburgh 50 -3.9
-0.1
Smyrna 87 Philly 79 +3.9
+0.1
Dover 115 Kansas City 57 -1.6
New York 63 Denver 92 -1.1
-0.0
Atlanta 75 Chicago 112 +1.1
+0.1
If winner is:HomeDrawAway
Week of 11/28100.0*Chance in playoffs100.0*Average seed
New York vs Halifax-13.2-3.9+13.3
-0.9-0.2+0.9
Chicago vs Detroit+5.2+4.9-5.4
+0.2+0.1-0.2
Atlanta vs Denver+3.5-2.7-3.4
+0.1-0.2-0.0
Milwaukee vs Kansas City-1.9-1.8+2.0
-0.1-0.1+0.1
Smyrna vs Dover+1.6-1.8-1.5
+0.0-0.1-0.0
Pittsburgh vs Philly+0.2-0.3-0.2
+0.1-0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-D-Lplayoffs123456789101112Count
8.53-0-088.8%1016631101,064,394
82-1-054.611638377197,807
7.52-0-121.72247274003,190,335
1-2-020.5204429603,009
71-1-11.21143832131195,962
0-3-0Out193242631
6.51-0-20.102194429503,184,576
0-2-10.002154232813,014
60-1-2Out111363913098,006
5.50-0-3Out114453631,063,650
Total:19.1%1216201818138408,900,784
Games Above .500
Chance Will Make Playoffs