The minimum required percentage for applying to an MS program in the USA can vary depending on the specific university and program you are applying to. Some universities may require a minimum of 60% marks in your undergraduate degree, while others may require a higher percentage. However, it's important to note that many universities in the USA consider a variety of factors beyond just academic performance when evaluating applicants. These may include work experience, research experience, letters of recommendation, and personal statements. So, while a good academic record can be helpful in the application process, it's not the only factor that universities consider. It's always a good idea to research the specific requirements of the programs you are interested in and reach out to their admissions office for more information.