Write SQL query to solve given problem: List the name of the rates that apply to the provinces that are in the territory that obtained the greatest increase in sales with respect to the previous year.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T2.Name FROM SalesTerritory AS T1 INNER JOIN StateProvince AS T2 ON T1.CountryRegionCode = T2.CountryRegionCode INNER JOIN SalesTaxRate AS T3 ON T2.StateProvinceID = T3.StateProvinceID ORDER BY (T1.SalesYTD - T1.SalesLastYear) / T1.SalesLastYear DESC LIMIT 1