Your CGPA is considered only if you are looking for higher study prospects. Most universities have a minimum percentage of eligibility criteria. Most foreign universities ask for 75% while Indian universities ask for 55%. So if higher studies are your goal then yes, a 7.82 SGPA is considered decent.
Eventually, it’s your degree that matters and not the grades. You will have the DU tag which will pave the way for great opportunities as most companies prefer DU students.
So, instead of focusing on the grades, just live your life to the fullest without sacrificing your academics.
It is up to you where you want your SGPA to be considered, and 7.82 SGPA, when combined with your other semester SGPA average, becomes CGPA only, which is converted to a percentage by multiplying it by 9.5, so 7.82 equals 74.29%.
If you want to apply for government jobs, you only need to have more than 60%. If you want to continue your education, it is up to the university; some will consider your graduation grade as an admission criterion.
If you want to take the CAT, for example, your graduation grade is very important. 7.82 is excellent if you come from an artistic background. If you come from a business background, 7.82 is fine. If you come from an artistic family, you should raise your score.