With some coins going up 50% or even l00% in a day or few days or in a week... any reason why bitcoin doesn't do that almost ever? Look at binance coin and many of those other coins that are literally doubling in a week. Now the btc dominance is going so low. And even when btc goes up... you don't ever see it going up that much percent in a week. I mean... its rare to see bitcoin say go up 50% in a week yet tons of altcoins do it.
Think about the price of bitcoin compared to the price of altcoin. A percentage change is the relative measure not the absolute measure. A 5% change in bitcoin price means a huge amount compared to the 5% change in a shitcoin that costs 1$/shitcoin.
Just ask yourself the question - Would it cost your a higher amount to move the bitcoin market price by 1% or a shitcoin market price by 1%? How can you reach this answer? By first knowing what the market price of the shitcoin or Bitcoin is.
This is why Bitcoin price does not change in percentage value much over a day but altcoins may undergo pump and dump and show up with 400% changes over a few hours.