translate English to French: Twelve groups representing slightly more than 30 per cent of employees in this category were highlighted because the proportion of non-standard employment either increased significantly (8 groups) or decreased significantly (4 groups) between 1988 to 1997.
100 des employés de cette catégorie; la proportion de l’emploi atypique y a augmenté considérablement (huit groupes) ou diminué de façon significative (quatre groupes) de 1988 à 1997.