SQL> Select CONCAT(TO_CHAR('0.001'*100,'990.99'),'%') FROM DUAL; CONCAT(TO_CHAR(' ---------------- 0.10% SQL> select to_char(1234567.89,'9,999,999.99') id from dual; ID -------------------------- 1,234,567.89 SQL> select to_char(1234567.89,'999,999,999.99') id from dual; ID ------------------------------ 1,234,567.89 SQL> select to_char(1234567.89,'009,999,999.9900') id from dual; ID ---------------------------------- 001,234,567.8900 SQL> select to_char(1234567.89,'9.99EEEE') id from dual; ID -------------------- 1.23E+06 SQL> select to_char(1234567.89,'999999.99EEEE') id from dual; ID -------------------- 1.23E+06 SQL> select to_char(-1234567.89,'999,999,999.99PR') id from dual; ID -------------------------------- <1,234,567.89>