Hi GotToBTru, \d does not match commas so your program splits up the numbers. If you add the comma in a character class it works.

use warnings;
use strict;

while(<DATA>) {
  chomp (my $line = $_);
  my @columns = $line =~ m/\s*(-?\d+)/g;
  print "@columns\n";
}

__DATA__
15,567 -25,324-45,234
 15,567-25,324-45,234 
-13,345 53,562 13,452 
 -7,521-22,454-54,671
[download]

Output:
15 567 -25 324 -45 234
15 567 -25 324 -45 234
-13 345 53 562 13 452
-7 521 -22 454 -54 671
[download]

Here it is with the comma added.

use warnings;
use strict;

while(my $line = <DATA>) {
  my @columns = $line =~ m/\s*(-?[,\d]+)/g;
  print "@columns\n";
}

__DATA__
15,567 -25,324-45,234
 15,567-25,324-45,234 
-13,345 53,562 13,452 
 -7,521-22,454-54,671
[download]

Output:
15,567 -25,324 -45,234
15,567 -25,324 -45,234
-13,345 53,562 13,452
-7,521 -22,454 -54,671
[download]

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