How are these numbers calculated?

Big Games

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

Week of 8/29100.0*Chance in playoffs100.0*Average seed
Hull FC 28 Hull KR 0 +0.3
+0.3
Widnes 24 Wigan 10 -0.2
Catalan 46 London 4 Out
Wakefield 42 Salford 6 -0.1
Week of 9/5100.0*Chance in playoffs100.0*Average seed
Huddersfield 38 Hull FC 28 -0.3
Hull KR 14 Catalan 32 +0.2
Salford 58 London 26 -0.1
Castleford 26 Wakefield 22 +0.1
Week of 9/12100.0*Chance in playoffs100.0*Average seed
Hull FC 24 Leeds 19 +1.0
Salford 36 Widnes 6 -0.2
Wakefield 18 Hull KR 42 -0.0
Games Above .500
Chance Will Make Playoffs