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*Average seed
Sharks 31 Lions 24 +14.2
+0.7
Reds 37 Rebels 23 +11.0
+0.2
Jaguares 25 Stormers 14 -4.1
+0.0
Sunwolves 42 Bulls 37 +1.6
+0.2
Brumbies 24 Hurricanes 12 -1.3
-0.2
Highlanders 22 Chiefs 45 -0.1
Week of 7/7100.0*Chance in playoffs100.0*Average seed
Stormers 27 Sharks 16 -23.9
-0.6
Chiefs 24 Brumbies 19 +5.2
+0.2
Bulls 43 Jaguares 34 +0.8
+0.1
Waratahs 77 Sunwolves 25 -0.2
Week of 7/14100.0*Chance in playoffs100.0*Average seed
Sharks 20 Jaguares 10 +25.0
+0.8
Highlanders 43 Rebels 37 +25.0
+0.2
Lions 38 Bulls 12 +0.3
Waratahs 31 Brumbies 40 -0.3
Points
Chance Will Make Playoffs