How are these numbers calculated?

Big Games

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

Week of 10/17100.0*Chance in playoffs100.0*Average seed
Geylang 0 Hougang 4 -13.9
-0.1
Y. Lions 2 Hougang 0 +12.6
+0.2
Tampines 3 Balestier 1 -12.5
-0.6
Home 2 Warriors 3 +1.2
+0.1
Week of 10/24100.0*Chance in playoffs100.0*Average seed
Hougang 4 T. Pagar 2 -32.6
-0.3
DPMM 1 Balestier 1 -2.6
-0.1
Albirex 2 Home 1 +0.3
Week of 10/31100.0*Chance in playoffs100.0*Average seed
Balestier 0 Home 1 Out
-0.7
Points
Chance Will Make Playoffs