Is this sentence correct, regarding structure and vocabulary choice?

[skystar30097]

Adolescents used less percent of the Nehbandani linguistic variables; instead, they used
more percent of Standard Persian variables compared with adult literate and illiterate informants.


Nehbandani is a dialect.

[charliedeut]

Adolescents used less percent a lower percentage of [you could also simply say "less"] the Nehbandani linguistic variables variants/variations; instead, they used
more percent a higher percentage of [you could also simply say "more"]Standard Persian variables variants/variations compared with adult literate and illiterate informants.


Nehbandani is a dialect.

Those are my suggestions. However, maybe "variables" is correctly used, although it sounds strange to me.

charliedeut