Example: suppose I, a clueless tech guy, am negotiating with a savvy and aggressive money-guy. Assume for sake of argument we're raising $1 million, and my naive thoughts are that "The company is worth $5 million."
Me: "The company is worth $5 million."
Him: "We can totally work with a $5 million post-money valuation."
Me: "Great."
Almost everyone on HN knows I screwed myself. You think I just priced the company down to $4 million, right? Yeah, even worse.
Him: "So you know, it is customary for companies in Silicon Valley to make generous equity grants to attract and retain employees."
Me: "Oh totally."
Him: "The standard is 20%. You could get a lower number, but honestly, you'd look like a greedy bastard out to screw his employees, and our firm would probably not do business with you."
Me: "Oh, I am not greedy."
Him: "Great! So, $5 million post minus $1 million investment leaves $4 million Pre, reserving 20% of the post for employees, means you have $3 million in equity in this company."
Me: "Waitwaitwait, that sounds..."
Him: "That sounds like I just made you a millionaire. Son, you don't want to be unreasonable here. This is how business has always been done in the Valley. Besides, 100% of nothing is nothing. Don't worry about a bit of dilution, it happens, worry about that huge pile of money you'll have when you IPO."
Edit: I originally wrote it as 20% of the Pre, but checking with VentureHacks suggests that it would probably be calculated as 20% of the post. Easy to screw this stuff up, right? It's almost like it is designed that way...
http://www.gilliganondata.com/index.php/2009/12/02/how-succi...
Use bar charts instead, or if you're really stuck on the pie chart thing, don't make it 3D
The smaller your percentage, the smaller your vote, and the less power you have when negotiating with others to form a coalition that would have controlling interest in the company; So yeah, I think your percentage does matter a lot.
A) There are few legal ways of really screwing over investors. B) You can sue for most of the legal ways.
Unforgettably, it's vary easy to screw yourself over when dealing with a start up. But, the real problem IMO is that employ's generally have less leverage and can't afford to sue. "We got an offer that's very good for us and acceptable to the investors. So, sure you get nothing but I don't need to care because this is no longer my company have a nice life."