what's with the sudden slump in myr value? i always see it stead at 450~500
People are just trading a few of their MYR for BTC to ride the upswing of BTC. An imbalance of sellers to buyers will always push the price down a bit. I wouldn't worry too much, if you look a the market cap (long term) there hasn't been a significant drop and the trend is most definitely upwards:
https://coinmarketcap.com/myr_90.htmlIn actual fact what is happening is good news - BTC increasing in value will also bring in new investors and traders to the crypto markets as a whole. More fiat will pass over the "event horizon" into crypto and inevitably lots of that investment will find its way through to MYR because MYR is one of the most promising alt coins out there.
Also ... consider this ... MYR may be (currently) worth a smaller fraction of a BTC, but BTC value expressed in fiat is increasing thus compensating somewhat for the drop in MYR-BTC exchange rate.
My advice to anyone right now is buy MYR while its cheap... once all those new BTC holders start moving into alt markets, the price of MYR will most definitely rise.