How are these numbers calculated?

Big Games

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

Week of 2/17100.0*Chance in playoffs100.0*Average seed
Roughnecks 10 Stealth 13 +12.7
+0.6
Swarm 15 Knighthawks 9 +1.2
+0.0
Knighthawks 6 Rock 10 +0.9
Rush 8 Mammoth 7 +0.7
Rock 12 Swarm 13 +0.4
If winner is:HomeAway
Week of 2/25100.0*Chance in playoffs100.0*Average seed
Stealth vs Knighthawks+11.0-15.3
+0.5-0.7
Bandits vs Rock-1.9+1.5
Rush vs Roughnecks+1.4-1.8
Black Wolves vs Mammoth-0.6+0.6

What If

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

100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789Count
1310-0In4555034,221
129-1In1966150264,687
118-2In440461001,286,574
107-3100.0%0739458003,674,351
96-498.5053742141006,850,531
85-570.804254124508,717,805
74-617.90216403577,659,624
63-70.9011348394,594,986
52-80.00122771,796,008
41-9Out0496414,258
30-10Out10052,797
Total:55.4%03713161617161235,345,842
Games Above .500
Chance Will Make Playoffs