Central Board Of Secondary Education [CBSE] — Not happy with 10th board marks

Address:

B.no 8 Datta Niwas , nagar manmad road, Ahmednagar

Sir, I got 97 .27 percent marks in my pre -board examination and I had never got beyond 90percent in my whole school career. But in (class-10) board examination I got only 79.6 percent which would hamper my career. So, I'm questioning the board authority that on which ground have they given me such worst percentage which had made me very upset.
I will be highly obliged to you if you take immediate step to set enquiries and solve my problem.
School name -: Yashshree Academy, Baba Estate, Aurangabad Road, Ahmednagar Maharashtra
Candidate name-: Sahil Sarang Shukre
Roll no-:15101861
School no-: 30220
Permanent Address-: B.no.8 Datta Niwas, Nagar Manmad Road, Savedi, Ahmednagar 414003.
Contact no.- [protected]