Tier Query Results MS SQL

Hello Experts,

I have a query, which returns results from an online survey, the existing query is detailed below -

select 
ROW_NUMBER() OVER(order by (((sum(Saleability)  + sum(Quality)  + sum(Availability) + sum(Delivery) + sum([Returns]) + sum(RetailPrice) + sum(ServiceSupport) + sum(Rep) + sum(Accounts) + sum(CreditControl) ) /10)  / count(*)) desc) as Position, 
brandid,
B.Name,
/*sum(Saleability) TotalSaleability,*/ 
sum(Saleability) /count(*) as avgSaleability,
/*sum(Quality) TotalQuality,*/
sum(Quality) /count(*) as avgQuality,
/*sum(Availability) TotalAvailability,*/
sum(Availability) /count(*) as avgAvailability,
/*sum(Delivery) TotalDelivery,*/
sum(Delivery) /count(*) as avgDelivery,
/*sum([Returns]) TotalReturns,*/
sum(Returns) /count(*) as avgReturns,
/*sum(RetailPrice) TotalRetailPrice,*/
sum(RetailPrice) /count(*) as avgRetailPrice,
/*sum(ServiceSupport) TotalServiceSupport,*/
sum(ServiceSupport) /count(*) as avgServiceSupport,
/*sum(Rep) TotalRep,*/
sum(Rep) /count(*) as avgRep,
/*sum(Accounts) TotalAccounts,*/
sum(Accounts) /count(*) as avgAccounts,
/*sum(CreditControl) TotalCreditControl,*/
sum(CreditControl) /count(*) as avgCreditControl,
(((sum(Saleability)  + sum(Quality)  + sum(Availability) + sum(Delivery) + sum([Returns]) + sum(RetailPrice) + sum(ServiceSupport) + sum(Rep) + sum(Accounts) + sum(CreditControl) ) /10)  / count(*)) Total,
count(*) Stockists,
sum(case when nextyeartrade = 'Y' then 1 else 0 end) as StockistsNY 
from [dbo].[SupplierSurveyInput] S
inner join dbo.Brand B
on S.BrandID = B.ID
where [CYearStockist] = 'Y'
group by b.name, brandid, SupplierSurveyID
order by Total desc

What I would like to do though is tier the results, so that any suppliers with less that 10% stockists are moved to the bottom, so the results would look like so

Stockists > 10% order by Total Desc
Stockists < 10% order by Total Desc

and have these returned in one recordset as they are currently.

Any suggestions?

Appreciate the help, many thanks