In the British TV show Dragons' Den, the ownership share an entrepreneur offers an investor is called equity.
Equity means an ownership interest in a company. During a pitch, an entrepreneur usually states how much money is wanted and what percentage of the business is being offered. A Dragon may accept, reject or negotiate that proposed equity.
For example, an offer of £50,000 for 10% equity implies a starting valuation of £500,000 before considering any later negotiation. The final deal shown on television can still be subject to due diligence and may not be completed exactly as agreed in the studio.
Equity is not the same as turnover, which is the value of sales, or profit, which remains after costs. It is also different from a royalty, where an investor receives an agreed payment linked to sales without necessarily owning the stated percentage of the company.