If it goes down it could go down 40 percent.
In addition, if a coin is deemed a security by the SEC its price will plummet: Not if but when!
This is a dangerous game and is pure gambling!
And vice versa, it can go up 40 percent.
Don't be negative, always stay positive in life and remember invest only what you can afford to lose, even if it crash 40 percent you will be ok then. This is high risk investment field and always was.