Profit is the difference between expense and income. Just subtract the income from the income and you will make a profit. The profit should be positive. In the performance of any financial transactions, it happens that a certain commission is withheld, this must also be taken into account in the expenditure graph.
One can know about his/her profits by keeping in mind the gap between the initial cost of investment and the final price of his portfolio. This is an easy way to calculate your profit but the most important thing is to maximize your profit and this could be done so by investing in a coin that is the most liquid in the market and the most profitable.
Besides, one having a good name in the market is normally demanded the most and that is the reason bitcoin has a high market cap. Besides, you can get the worth of your portfolio maximized by selling when the market is green.