How are these numbers calculated?

Big Games

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

Week of 6/30100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Reds 37 Rebels 23 -19.6
-13.5
-1.1
Sharks 31 Lions 24 -5.6
-0.1
Jaguares 25 Stormers 14 -2.7
-0.2
Brumbies 24 Hurricanes 12 -1.7
Sunwolves 42 Bulls 37 +1.6
Highlanders 22 Chiefs 45 -0.2
-0.1
Crusaders 45 Highlanders 22 +0.1
Week of 7/7100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Stormers 27 Sharks 16 +13.7
+0.2
Chiefs 24 Brumbies 19 +4.5
+0.1
Bulls 43 Jaguares 34 +4.2
+0.1
Waratahs 77 Sunwolves 25 -0.9
No
-0.5
Week of 7/14100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Sharks 20 Jaguares 10 -25.0
Highlanders 43 Rebels 37 -25.0
-0.5
Points
Chance Will Make Playoffs