Sorry if my post is in the wrong place or it's not relevant.
Of course that the probability of bitcoin to change its value is always 1, because the price/value of bitcoin changes every time and never is stable. Check now and check for the past month this year and you can see how unstable the price was, if it is possible to lose its value then it has the potential to increase its value too. There will happen some correction of the price of course but more and more big investors are investing in bitcoin and this is one of the reason of the high price that we see now.
There would always be corrections of the value of Bitcoin from time to time so that we can all avoid a big bubble. These corrections are actually good for Bitcoin and it is good for people who wanted to enter Bitcoin at a cheaper price. Bitcoin just like any other stock or foreign exchange fiat money can go down and up depending on the market and there are many factors that can affect the market anytime.