Missing $ on loop variable at measurements2.pl line 69.

##</code><code>##

#!/usr/local/bin/perl

use strict;
use warnings;

my $path='CustData.txt';
my @range = ("10-20", "20-30", "30-40", "41-50", "51-60", "61-70", "71-80","81-90", "91-99");
my @count;
my @percent;
my %HoH;

open(DATA, "<$path") || die "Couldn't open $path for reading: $!\n";

my $output;                                         
open my $fd, '>', \$output or die "open: $!";

while (<DATA>)
{
    chomp;
    my ($id, $title, $surname, $forename, $sex, $dob, $vision) = split(/,/);
    $HoH{$id} = {'title' => $title, 'surname' => $surname, 'forename' => $forename, 'sex' => $sex, 'dob' => $dob, 'vision' => $vision,};
}
close(DATA);

my $range1=1;
my $range2=10;
my $range3=1;
my $range4=10;
my $person_count=0;

sub personCount
{
	my ($x,$y) = @_;
	my ($vision_total,$person_count)=0;
	foreach my $id (sort keys %HoH)
	{
		if( ($HoH{$id}->{'vision'}>=$x) & ($HoH{$id}->{'vision'}<=$y) )
		{
		++$person_count;
		$vision_total=$vision_total+$HoH{$id}->{'vision'};
		}
	}
	return int($person_count);
}

sub percent
{
	my ($x,$y) = @_;
	my $percent = 0;
	my ($total_person_count,$vision_total,$person_count)=0;
	foreach my $id (sort keys %HoH)
	{
		++$total_person_count;
	}

	foreach my $id (sort keys %HoH)
	{
		if( ($HoH{$id}->{'vision'}>=$x) & ($HoH{$id}->{'vision'}<=$y) )
		{
		++$person_count;
		$vision_total=$vision_total+$HoH{$id}->{'vision'};
		}
	}
	return $percent = ($person_count/$total_person_count)*100;
}

print $fd ("Range\t");
   foreach (@range)
    {
        printf $fd ("%7s", $_);
    }
    print $fd ("\n");
    
for my ($counter=0;$counter<9;$counter++)
{
	$range3=$range3+10;
	$range4=$range4+10;
	my $personCount = personCount($range3,$range4);
	push (@count, $personCount);
	
}
print $fd ("Count\t");
   foreach (@count)
    {
        printf $fd ("%7s", $_);
    }
    print $fd ("\n");

for my ($counter=0;$counter<9;$counter++)
{
	$range1=$range1+10;
	$range2=$range2+10;
	my $percent = sprintf("%.0f", percent($range1,$range2));
	push (@percent, $percent);
}
print $fd ("Percent\t");
   foreach (@percent)
    {
        printf $fd ("%7s", $_);
    }
    print $fd ("\n");

print $fd ("\n");
close $fd;