How to cancel a valid Schengen visa and apply for a new visa?

I have a valid Schengen multiple-entry business visa valid for one year, from 6 September 2015 to 5 September 2016. I traveled to Germany from 6 September 2015 to 31 October 2015, for 54 days. I need to travel again from 10 January 2016 to 02 April 2016, for 84 days. With this visa I cannot travel as the duration of stay is more than 90 days within 180 days. Can I cancel this visa and apply for a new visa? What is the process for this?