How are these numbers calculated?

Big Games

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

Week of 4/15100.0*Chance in playoffs100.0*Average seed
Stealth 13 Roughnecks 12 +0.2
+0.1
Knighthawks 11 Swarm 17 +0.2
Swarm 16 Black Wolves 9 -0.1
-0.1
Rock 12 Bandits 9 -0.1
-0.1
Week of 4/23100.0*Chance in playoffs100.0*Average seed
Stealth 14 Rush 12 +1.4
+0.2
Black Wolves 21 Swarm 11 +0.8
Knighthawks 13 Bandits 15 +0.6
Mammoth 10 Rock 5 +0.1
+0.1
Week of 4/29100.0*Chance in playoffs100.0*Average seed
Mammoth 11 Stealth 10 Out
-0.5
Swarm 14 Stealth 6 -0.2
Roughnecks 18 Rock 17 +0.2
Games Above .500
Chance Will Make Playoffs