Flemish to English Bus/Financial Business/Commerce (general) staff costs

This is listed in someone's Proz glossary as 'profit and loss account', but it doesn't seem quite right here. Context is working out staff costs in a bar/restaurant. This is an alternative to the option of multiplying the gross pay by a factor (to include social security etc.):

Voor de bar en de bediening kan ook het systeem van % op de verkoop toegepast worden.
Dit % bedraagt momenteel 11,4 % op het zakencijfer, inclusief B.T.W.