Hi Shabir,
can you share us any additional details except this screenshot? That would help a lot when trying to understand the problem.
Let's start with some basics:
1) Which report is this?
2) Did you develop it or is it a standard report?
3) What is the number format in these fields?
4) What is the data type of these fields?
5) Do you have any other fields on this report, using the same data type?
6) Do you have any other reports where this same data type is used? If yes, do the numbers display correctly there?
7) Did it work correctly in the past or has it always worked wrong?
8) Does it work wrong in all systems or only one system?
9) Does it only work wrong when exporting to PDF?
10) Does it work wrong for all users or just one user?
11) What D365 F&O version are you using?
12) What type of system is this? Onebox, UAT, Prod? Self-service or not self-service?