Your permit applies to the employer and profession stated in the decision that granted it. If something changes, you may need to apply for a new permit.
If you are going to change employer or profession
If you get a new job with another employer, or if you change profession or have completely new work responsibilities, you need to apply for a new work permit. The same applies if your employer changes its company registration number or gets new owners, as this counts as a change of employer.
Once you have submitted your new application, you can start working for your new employer or in your new profession before you have received a decision from the Swedish Migration Agency, provided that you have applied before your previous work permit has expired.
Keep in mind that your new employer must have advertised the position in Sweden and within the EU/EEA and Switzerland before you start your employment.