table linking problem

Hi all,
    I have two table, follow :

content
content_id    |    material_id    |    percentage
-----------------------------------------------------
    1                        1                    100%
    2                        2                    63.5%
    2                        3                    31.5%
    2                        4                        5%

material
material_id    |    name
------------------------------------------
    1                    COTTON
    2                    POLYESTER
    3                    NYLON
    4                    SPANDEX

The Question is,
How can I get like this :
100% COTTON
63.5% POLYESTER 31.5% NYLON 5% SPANDEX

Can I return the string like this ?
Thanks.