Please can anyone explain to me the reason behind recent decline in bitcoin value and a sudden increase in altcoins to the turn that ethereum in particular move to the height of $325.16 of which it has never reach such a height in the last three weeks.
Your ideas are all welcome
It's because of the segwit2x cancelled and it makes Ethereum and other altcoins raise up. Before the segwit2x cancelled news appear, people sell all their altcoins to buy bitcoins. That's why so many altcoins price dropped so hard.