Hi

70.75% is not an eligible score for securing a seat in any college of Delhi University. Your question lacks relevant information like your category and the course that you want to pursue so it's difficult to give you exact explanation. However as per previous cut off trends, considering for various courses of Arts, Commerce and Science, closing cut offs are generally around 86-87% (general category) and 79-80% (reserved categories).

For this year's cut off details, check the link below -

https://www.google.com/amp/s/university.careers360.com/articles/du-cutoff/amp

You can also predict colleges here -

https://university.careers360.com/delhi-university-college-predictor

Thanks