I think its normal that DIA coin has lost half of its value.Just see the market all coins were in red jone though now market is recovering.Just in a moment Bitcoin lost 1500$+ from its value and ethereum also lost its valuse from 460$ to 353$.So basically all the coins has decreased but DeFi coin has suffered more.All know that DeFi is the new topic and may be because of fud around DeFi ,DIA has lost some of its value.But I think dia coin will increase and it will be its ATH.Just look at the DeFi voin Sushi.It has decreased drastically.
DIA case was purely due to the red market factor which almost affected all defi tokens, but the decline was not too severe because it was still above the bounding curve and private sale prices, for Sushi tokens it became a severe dump due to the actions of its founder who took terrible actions by selling the tokens he had.and removed some of liquidity from uniswap and that's why sushi dropped so much from $13 to $2.