Just to emphasize how completely and utterly insane this is, Trump is alleging that a minimum of about 1-in-30 Clinton votes was illegally cast. This guy is unreal.
Not to mention saying that ~2% of the total votes cast in an election THAT HE WON were fraudulent, which if true would strengthen the case for an audit.
What 2%? In what election?
This one. Trump's claim is that millions of votes (multiple millions) are fraudulent. Therefore, at a minimum he means 2 million votes, or 1.5% of the total voting electorate, are fraudulent. That is a serious accusation for the President-elect to mean and calls doubt on the legitimacy of the election, the one that he won.
If he had any common sense he'd just shut up about this issue, rather than trying to open up the can of worms with the (wild, unfounded) claim something like 1/60 votes nationally were fraudulent.