while ($x =~ m/%(.)/g) {
  push(@order, $1);
  $count{$1}++;
}

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At the end of the while loop, @order contains the order in which the %-codes were found, and %count contains the counts.

In reply to Re: Extracting the number of %'s in a string by pc88mxer
in thread Extracting the number of %'s in a string by mnranjeeth

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