If it has to be precisely 75% of the count, then other solutions in this thread are suitable. But if you just want "about 75%" of the data, this'll work: 
my @subset = grep rand(100) <= 75, @input;

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-- Randal L. Schwartz, Perl hacker
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In reply to •Re: Selecting random records from an array by merlyn
in thread Selecting random records from an array by Anonymous Monk

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