How about this?
my $post = "Hi, erm does anyone know how to do a string replacement th
+at caters for all the following scenario? 500 changes to 000 or 0 988
+ changes to 000 or 0 1210 changes to 1000 1300 changes to 1000 2134 c
+hanges to 2000 2500 changes to 2000 Thanks in advance.";
my %replacement = $post =~ /(\d+) changes to (\d+)/g;
print Dumper \%replacement;
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