According to me the percentage criteria may vary from the company to company.

Because most of the company wants 60% Marks thought out form class 10th to Graduation Or Post graduation.

But you have scored good marks in your B.tech, and you will get good jobs according to your B.tech marks. Most of the companies want current scores.

But if you will have get knowledge and skills, then definitely you will get jobs.

The jobs are basically depends on the knowledge not on the marks. So if your communication skills are good and you have good knowledge about current affairs and general knowledge, then definitely you will get jobs in future.

some good companies there you may apply for the job are as follow :
Bharat Sanchar Nigam Limited
Tata Consultancy Services
Bharti Airtel Limited
Wipro Ltd
Infosys Technologies Limited
Hewlett-Packard India
HCL Infosystems Limited
Reliance Communications Ltd
LG Electronics India Pvt Ltd
IBM India Pvt Ltd
Videocon Industries Ltd
HCL Technologies Limited
Satyam Computer Services Ltd