Restrict based on summation

[Baarathi88]

Is there a way to Count Distinct Order with Sales above 300.

I tried this expression but getting wrong result. 

Order Count = CALCULATE(DISTINCTCOUNT(Sheet1[OrderID]),FILTER(Sheet1,Sum(Sheet1[Sales])>300))

No. of Orders with sales over 300 is 2. But I'm getting the result as 4 using the above expression.

OrderID	OrderDate	ShippedDate	Delivery Date	Sales
1	13/1/2020	15/02/2020	13/03/2020	100
2	15/02/2020	13/03/2020	15/04/2020	50
2	15/02/2020	13/04/2020	15/05/2020	300
3	15/02/2020	13/03/2020	15/04/2020	250
3	15/02/2020	13/04/2020	15/05/2020	60
4	15/02/2020	13/03/2020	15/04/2020	30
4	15/02/2020	13/04/2020	15/05/2020	80

[jdbuchanan71 · Accepted solution]

@Baarathi88 

It's all about context.  Give this a try:

Order Count = 
CALCULATE(
    DISTINCTCOUNT( Sheet1[OrderID] ),
    FILTER ( 
        VALUES(Sheet1[OrderID]),
        CALCULATE( SUM ( Sheet1[Sales] ) > 300 )
    )
)

[Baarathi88]

@jdbuchanan71 Thank you, that works