% change in salary for this year

By what x will your salary have changed from January 1st, 2015 to January 1st, 2016. This could be due to promotions, passing exams, changing jobs, merit raises, etc.

For those of you who may have forgotten: (Salary on Jan 1, 2016 - Salary on Jan 1, 2015)/(Salary on Jan 1, 2015)

Example:
Jan 1, 2015: 55,000
Jan 1, 2016: 63,000

(63-55)/55 = 14.5%


% change in salary for this year