To change or not to change??

Finding a job is easy
Finding a good job with good pay is hard
Especially in this bio-related field
Even many companies said Bio-grades are far too many than the demand
Most of the time Diploma level can do the same thing with Degree level
So even if manage to get the job
The salary will not be higher than RM2k
Most of them RM1.5k-1.7k
Choosing marketing based careers seems can promise me a better $$$ future

Thinking hard, to change major or not to change??