How are these numbers calculated?

Big Games

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

Week of 4/14100.0*Chance in playoffs100.0*Average seed
Mammoth 13 Knighthawks 7 In
Rush 12 Black Wolves 13 -1.5
Swarm 17 Bandits 16 +0.4
Stealth 15 Roughnecks 11 -0.1
Rock 8 Bandits 13 +0.2
Week of 4/22100.0*Chance in playoffs100.0*Average seed
Stealth 13 Mammoth 7 -0.4
Knighthawks 15 Black Wolves 13 +0.1
If winner is:HomeAway
Week of 4/28100.0*Chance in playoffs100.0*Average seed
Black Wolves vs Stealth+0.2-0.3
Mammoth vs Rush+0.2-0.2

What If

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

If finish:Chance inChance will finish regular season at seed
Games Above .500
Chance Will Make Playoffs