The term "percentage stake" refers to the proportion or percentage ownership that an individual, group or company has in a particular business venture. It represents how much of the total equity or assets is owned by them in comparison to other investors or shareholders. In simpler terms, it indicates the extent of one's involvement and participation in the success or failure of the enterprise. The higher the percentage stake, the greater the level of control and influence an individual has over decision-making processes within the company.