matching escape string , doesn't work ?

[Aaron Lewis]

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Hi,
        echo %A3 | sed 's/(%[0-9A-Z]{2})//g'

        I'd like %A3 like string to be removed , what's wrong with my script ?

        Thanks.


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Best Regards,
Aaron Lewis - PGP: 0x4A6D32A0
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iEYEARECAAYFAkwxtVUACgkQvf41sEptMqBg9ACgmtDhFkoY14LS+oyRhDmdAcaw
6yAAoJvE0PW+UyayxG6+ZQtPABULpKkn
=L8MU
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