How are these numbers calculated?

Big Games

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

Week of 4/12100.0*Chance in playoffs100.0*Average seed
Knighthawks 10 Stealth 7 -6.5
-0.2
Rock 10 Wings 9 +2.5
+0.1
Rock 13 Bandits 9 +0.9
Swarm 10 Bandits 9 +0.3
-0.1
Week of 4/19100.0*Chance in playoffs100.0*Average seed
Stealth 11 Wings 15 Out
-0.6
Swarm 12 Mammoth 18 -3.0
+0.1
Rush 10 Stealth 5 -0.1
Week of 4/26100.0*Chance in playoffs100.0*Average seed
Swarm 6 Rock 8 +0.3
Stealth 8 Roughnecks 14 -0.2
Games Above .500
Chance Will Make Playoffs