How are these numbers calculated?

Big Games

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

Week of 12/27100.0*Chance in playoffs100.0*Average seed
Hampton Bays 77 Westhampton 71 -1.7
-0.6
Harborfields 59 Connetquot 54 -0.2
-0.0
Sayville 52 Hauppauge 59 +0.1
-0.1
Glenn 56 Kings Park 63 +0.1
Mt. Sinai 68 Sachem East 58 -0.1
Sachem North 53 BBP 62 -0.1
ESM 47 Smithtown East 57 +0.1
SWR 55 Rocky Point 66 -0.1
Center Moriches 98 BBP 55 +0.0

What If

Chances based on how well the Westhampton finish out the regular season.   Explain

100100100100100100100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910111213141516171819202122232425262728Count
85-042.2%0021129351840040,920
74-12.000210263322610249,239
63-2Out00417343112100578,180
52-3Out00214413391636,278
41-4Out018314318330,656
30-5Out01247563,931
Total:1.2%000012468121419171161,899,204
Games Above .500
Chance Will Make Playoffs