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 -17.2
-0.7
Catalan 46 London 4 -6.4
-0.1
Widnes 24 Wigan 10 -5.4
-0.1
Wakefield 42 Salford 6 +0.7
Week of 9/5100.0*Chance in playoffs100.0*Average seed
Hull KR 14 Catalan 32 Out
-0.6
Bradford 12 Widnes 32 -2.8
-0.1
Huddersfield 38 Hull FC 28 +0.2
Salford 58 London 26 -0.2
Castleford 26 Wakefield 22 +0.1
Week of 9/12100.0*Chance in playoffs100.0*Average seed
Wakefield 18 Hull KR 42 +1.5
Salford 36 Widnes 6 -0.3
Hull FC 24 Leeds 19 -0.3
Games Above .500
Chance Will Make Playoffs