How to avoid Value_error exception in forrmula coloumn in oracle reports

Dear Team,

I have created on formula coloumn but it is going in value error in exception .

I observed that because of '%'  .

my below query output is  :  80% TRC 10 % REC OF MATL 10 % PBG

select DESCRIPTION

  --  INTO lc_payment_terms

  from apps.oe_order_headers_all oha

       , apps.ra_terms rat

  where oha.PAYMENT_TERM_ID = rat.term_id

    AND oha.order_number = :Contract_No--70100028

    AND oha.org_id = :org_id--87

but not printed output in oracle report PDF format not also printing in XML output also.

Please suggest me .

Regards,

Sandip Chakor