How are these numbers calculated?

Big Games

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

Week of 7/1100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Chiefs 23 Crusaders 13 +3.3
+24.5
+0.9
Brumbies 43 Reds 24 -1.2
Sunwolves 12 Waratahs 57 -0.1
Hurricanes 37 Blues 27 -0.1
-6.0
-0.2
Kings 37 Highlanders 10 +3.9
+0.2
Week of 7/8100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Blues 40 Brumbies 15 In
Reds 5 Chiefs 50 In
+25.2
+0.8
Crusaders 85 Rebels 26 -12.6
-0.3
Waratahs 17 Hurricanes 28 -12.3
-0.2
Week of 7/15100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Highlanders 25 Chiefs 15 No
-1.0
Crusaders 10 Hurricanes 35 +0.6
Points
Chance Will Make Playoffs