GTA,
Report will displays the currecy written format based on the system level currency setup.
If you want to chage the system level currency setup, follow below the steps.
Go to Microsoft Dynamics GP > Tools > Setup > Currency .
Under Currency = choose which currency do you want to change to two decimal places.
If the "Separator : Decimals" is greater than 2 then you can't dicrease the currency decimals from front end.
you can change it from backend only.
For backend process, use below the query.
update DYNAMCICS..MC40200 set DECPLCUR = 3 (means decimal places 2) where CURNCYID= 'Enter currency id'