Man pages matching name spreadsheet::parseexcel::fmtdefault in section 3pm:

Spreadsheet::ParseExcel::FmtDefault.3pm.en	debian 10 / libspreadsheet-parseexcel-perl
Spreadsheet::ParseExcel::FmtDefault.3pm.en	debian 11 / libspreadsheet-parseexcel-perl
Spreadsheet::ParseExcel::FmtDefault.3pm.en	debian 12 / libspreadsheet-parseexcel-perl