Calculation field in Pivot Table

Tried to use search, but didn't find anything.
Here is a problem:

I try to add a calculation field to my pivot table that suppose to calculate:
value for specific field divided by maximum value of another field.
I try to make something like:

= Value1 / MAX(Value2)

The problem is: MAX(Value2) is calculated for specific field but not for the whole table as I need it. Is there any way to solve that?

Thanks in advance.