How are these numbers calculated?

Big Games

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

Week of 4/17100.0*Chance in playoffs100.0*Average seed
Stealth 9 Knighthawks 13 -12.8
-0.3
Rock 15 Black Wolves 12 +3.7
+0.1
Swarm 6 Roughnecks 10 +0.3
Week of 4/25100.0*Chance in playoffs100.0*Average seed
Bandits 17 Stealth 9 -5.9
-0.2
Knighthawks 14 Black Wolves 6 +3.5
+0.1
Swarm 12 Rush 16 +3.5
+0.1
Black Wolves 9 Bandits 20 +3.4
+0.2
Week of 5/1100.0*Chance in playoffs100.0*Average seed
Stealth 13 Roughnecks 14 Out
-0.7
Swarm 13 Knighthawks 12 -0.3
Black Wolves 7 Rock 10 +0.1
Games Above .500
Chance Will Make Playoffs