Can I deduct internet expenses from my gross revenue if I use it for personal purposes too?

Thank you Rupesh for your answer, what about other common expenses like electricity?

Thank you for your reply Rohit-ji, how should we calculate the portions? Is it a simple 50/50 divide? If you know the relevant law sections etc., please cite them here.

Thank you for your replies Raj Doshi-ji and Rohit-ji.

The most objective approach would be to use separate internet connection for business and personal purposes, but since I am just a single person this is not a good option as I have no established work place. So in this case I may determine a reasonable proportion of the costs that go towards professional usage.