How are these numbers calculated?

Big Games

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

Week of 7/29100.0*Chance in playoffs100.0*Average seed
Cronulla 32 Canberra 10 -13.0
-0.9
Parramatta 22 Brisbane 14 +9.8
+0.3
Manly 8 Balmain 4 -2.4
-0.0
Souths 24 St George 26 +1.0
+0.1
Newcastle 12 Penrith 23 -0.8
-0.1
Canterbury 18 Illawarra 12 -0.3
-0.1
Week of 8/5100.0*Chance in playoffs100.0*Average seed
Canberra 26 Easts 18 +16.4
+0.4
Wests 23 Manly 20 +12.5
+0.4
Balmain 16 Penrith 14 -9.6
Brisbane 24 Newcastle 8 -2.5
-0.0
St George 0 Canterbury 26 -0.0
Illawarra 14 Cronulla 22 -0.0
Week of 8/12100.0*Chance in playoffs100.0*Average seed
Gold Coast 4 Canberra 24 In
+0.4
Balmain 20 Brisbane 10 +0.3
Penrith 4 Manly 18 +0.6
Games Above .500
Chance Will Make Playoffs