Suppose bitcoin price is $10.000 and it increases by just $200 to reach $10.200 during a day. This is 2% profit (excluding fees). In other words, it is $2 profit with $100 investment.
Look when price is $10k and it goes up by $200 that means the change for the day is +2% which means a small swing in price.
Now Suppose bitcoin is $4.000 and it goes up by the same $200 and reaches $4.200. This is 5% profit! (excluding fees). In other words, it is $5 profit with $100 investment.
Now let's consider both cases and you will actually notice that in case the $200 swing happens in the negative way then you will have bigger loss too. I really laughed when I first read this post but then I stopped by and thought of explaining this to you. In simple words, you cannot say if price of bitcoin is $1 and it swings $200 you make 2000% profit .. you have to be realistic because lower the price of asset lower will be the swing.