/usr/share/perl5/Excel/Writer/XLSX/Package/ is in libexcel-writer-xlsx-perl 0.47-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Excel/Writer/XLSX/Package/App.pm
/usr/share/perl5/Excel/Writer/XLSX/Package/Comments.pm
/usr/share/perl5/Excel/Writer/XLSX/Package/ContentTypes.pm
/usr/share/perl5/Excel/Writer/XLSX/Package/Core.pm
/usr/share/perl5/Excel/Writer/XLSX/Package/Packager.pm
/usr/share/perl5/Excel/Writer/XLSX/Package/Relationships.pm
/usr/share/perl5/Excel/Writer/XLSX/Package/SharedStrings.pm
/usr/share/perl5/Excel/Writer/XLSX/Package/Styles.pm
/usr/share/perl5/Excel/Writer/XLSX/Package/Theme.pm
/usr/share/perl5/Excel/Writer/XLSX/Package/VML.pm
/usr/share/perl5/Excel/Writer/XLSX/Package/XMLwriter.pm
/usr/share/perl5/Excel/Writer/XLSX/Package/XMLwriterSimple.pm