Formula Error

I am trying to run a formula as follows:

'*' & {Table.Field} & '*'

The idea being that I get the result: (where the field is '123')

*123*

However, every time I run this report, I get the result:

*123.00*

The decimal places are appearing for no apparent reason, the field has no decimal places.

I have tried to fix this with no result, it is confusing me very much.

Can someone help me?