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
Knighthawks 11 Swarm 17 -0.2
Stealth 13 Roughnecks 12 In
Swarm 16 Black Wolves 9 -0.1
-0.3
Rock 12 Bandits 9 +0.1
Bandits 14 Rock 8 -0.1
Mammoth 5 Rush 11 -0.0
Week of 4/23100.0*Chance in playoffs100.0*Average seed
Black Wolves 21 Swarm 11 +0.3
Mammoth 10 Rock 5 -0.1
Knighthawks 13 Bandits 15 -0.1
Week of 4/29100.0*Chance in playoffs100.0*Average seed
Bandits 12 Black Wolves 7 -0.4
Knighthawks 9 Rush 13 -0.1
Mammoth 11 Stealth 10 -0.1
Games Above .500
Chance Will Make Playoffs