It is possible that the "Amount" or "Summa OC" has some decimal values (eg: 1,000000000000000004) that are rounded off. But the next column does not round off...
So you have two options here
- easy fix -> format the "Diff Summa" as Number with One decimal place.
- Force the decimals in "Amount" and "Summa OC" by using ROUND()
Naz