There is probably a more elegant solution but try this:
Right click on the field and select Format Field.
Select the Number tab
click on Customize
UNder the Number Tab add a formula to the Decimals as:
if right(totext({table.numberfield},2),2)="00" then 0 else
if right(totext({table.numberfield},2),1)="0" then 1 else 2