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
Ethereum is actually not the biggest mover in the past few days. What is the bigest mover would be likes of IOTA, Monero and other coins that you can currently view on coinmarketcap.com in terms of 24h gains.
Bitcoin has obviously experienced sideways movement, and even negative movement in some cases.
In my opinion, this is purely normal market activity. Since people expected the fork to go through and alts crash, now that there is the opposite thing happening, they are moving their money away from BTC and into alts. This should be short term though.