How calculate percentage

I already have two complex queries returning numeric values; so, in order to get the percentage value I need to use a formula:  (query1 / query2)*100, and, could be even better applying a percentage mask&.
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Kevin CrossChief Technology OfficerCommented:
Think this should work (value is column name returned from your queries -- believe cross join will work since you only have one record/value in each -- can try outer apply also unless you can use a stored procedure then I would set each value to a @variable and then use them in calculation like I show below):
CASE q2.[value] WHEN 0 THEN 0
ELSE q1.[value] * 100.0/q2.[value] END AS [Percentage]
FROM (query1) AS q1
CROSS JOIN (query2) AS q2

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