There are two fields. The first contains numeric value. The second should contain the sum of the all changes of the first field. Can I use calculated field for this task? If so what would be inside the formula?
For example:
Update 1 First field changed manually to 100. Second automatically contains 100.
Update 2 First field changed manually to 200. Second automatically contains 300.
Update 3 First field changed manually to 100. Second automatically contains 400.
Calculations can reference themselves.
So, for example, let's say you have a numeric field named Total Sum. For that field, you would use the following calculation
SUM([Field with value],[Total Sum])