Leave app Using options and automatic deduction formula

[numfon_naka]

Now I make my leave app.

which this leave app Those on leave must enter the number of leave days themselves. As for the remaining leave days, I have a formula that automatically breaks.
But on the issue of those taking leave from work, sometimes they enter the wrong number. If I make an option Can the formula calculate this?

[numfon_naka]

The total leave fields will be filled in by the leave recipient themselves. But I'll make it an option. But the formula doesn't automatically break.

[numfon_naka]

Formula used for automatic subtraction

ANY(SELECT(The right to leave work[สิทธิ์พักร้อน], ([_THISROW].[Employee ID] = [Employee ID])))
- SUM(
SELECT(
Employee leave work[รวมวันลา],
AND(
([ประเภท ] = ("พักร้อน")),

[Employee ID] = [_THISROW].[Employee ID]

)
)
)