you're asking how many % people will sell their holding when they're profited for more than 500% and around that ?
well if you're asking about it i can tell you that only a few %,i think nobody know the right number.
but i am sure it will only a few people will sell their holding,you know why?
because it has been 1000% from their holding but they keep buying and buying.
they know it will be huge in the next few years later that is why many people keep holding it until it reach 6 figures.
so,only a minor people keep selling it for profit and cash out
That's depends on the status of life of that person, maybe because he is in a desperate needs for cash or he have a family and he has no choice but to sell some coins for monthly allowance or he has a very bad gambling habit. I've been holding my btc for almost 2 years and I well sell till the price go up to 100 thousand and up. My father has a pretty decent job so I'm not in a hurry for money but I will monitor the price from time to time in order to not lose in the long run. Good luck to us holders.