There is no average, because every company and situation is different. But as a general rule of thumb, the investors in each round of financing will get somewhere between 15% and 35% of the equity in the company, and the total amount raised in each round should be enough to get the company to a significant increase in value.
Unfortunately, the reality of entrepreneurship is that raising seed funding is much, much more difficult than you have been led to believe from the press reports about early stage financing. Only one out of every 400 companies seeking funding from venture capital firms actually receives it. And even when trying to raise much smaller amounts of money from individual ‘angel
In very general terms, roughly 1,500 startups get funded by venture capitalists in the US, and 50,000 by angel investors. VCs look at around 400 companies for every one in which they invest; angels look at 40.
There are several million “startups” that are formed each year, so one way of looking at it is that there are several million