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--------------------------1,234,567.89SQL> select to_char(1234567.89,'999,999,999.99') id from dual;ID------------------------------1,234,567.89SQL> select to_char(1234567.89,'009,999,999.9900') id from dual;ID----------------------------------001,234,567.8900SQL> select to_char(1234567.89,'9.99EEEE') id from dual;ID--------------------1.23E+06SQL> select to_char(1234567.89,'999999.99EEEE') id from dual;ID--------------------1.23E+06SQL> select to_char(-1234567.89,'999,999,999.99PR') id from dual;ID--------------------------------<1,234,567.89>