How are these numbers calculated?

Big Games

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

Week of 4/11100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Hekari United 0 Team Wellington 2 -30.0
-30.0
-1.5
Tafea 2 Hekari United 3 +24.4
+24.4
+1.9
Auckland City 3 Western United 0 -2.6
-2.6
-0.1
Suva 2 Amicale 3 -2.4
-2.4
-0.1
Pirae 3 Lupe ole Soaga 3 +2.0
+2.0
+0.1
Ba 3 Gaïtcha 0 -0.6
-0.6
-0.0
Team Wellington 2 Tefana 1 -0.5
-0.5
Western United 0 Amicale 1 -0.5
-0.5
-0.0
Ba 3 Lupe ole Soaga 1 -0.2
-0.2
-0.0
Suva 0 Auckland City 3 -0.2
-0.2
-0.0
Gaïtcha 5 Pirae 2 -0.1
-0.1
+0.0
If winner is:HomeDrawAway
Tefana vs Hekari UnitedOutOut+22.7
NoNo+22.7
-1.8-0.1+1.6
Tafea vs Team Wellington+4.7-0.6-0.6
+4.7-0.6-0.6
-0.2-0.1+0.0
Tefana vs Tafea+0.5+0.5-0.6
+0.5+0.5-0.6
+0.0+0.2-0.1
If winner is:HomeDrawAway
Week of 4/18100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Amicale vs Auckland City-1.3-14.9+5.0
-1.3-14.9+5.0
-0.0-0.2+0.1
Gaïtcha vs Lupe ole Soaga-5.5+5.7+5.7
-5.5+5.7+5.7
-0.1+0.2+0.0
Ba vs Pirae-0.4-0.5+6.9
-0.4-0.5+6.9
+0.0+0.0-0.2
Suva vs Western United-0.0+0.2-0.0

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsPlayoffs123456789101112Count
61-0-040.2%40.2%0436392017,704,809
40-1-0OutNo4474813,333,598
30-0-1OutNo1254226606,619,385
Total:17.5%17.5%021618181916102017,657,792
Points
Chance Will Make Playoffs