University Of Calcutta — Unavailable of important documents on website

Address: Calcutta University, 87/1 College Street, Kolkata - 700073, West Bengal

I have completed my B. Sc. Honours in chemistry from Calcutta University in[protected] session under CBCS system and we received our result in CGPA. For my higher study & different exams purposes I am facing a problem regarding CGPA to percentage conversion. We received our result in cgpa but in different places when they ask marks in percentage I don't get any PDF of cgpa to % conversion formula in the Calcutta university website. I need to show them the conversion rule of calcutta university. Even I mailed a higher authority but did not get any response.

Please help me out. I hope that will be so helpful for all the CU students.