You can change the password from profile by following the below steps.

Step1: Click on profile→ Settings→ Change password

Step2: Enter the current Password then add the new password, Reenter the new password.

Step3: Click change password. Your password is updated with the new password.

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Password needs to have atleast 10 characters 
                                                                                                                                                                                                                                                                                                                                                                                                                                   
Password needs to have atleast 1 uppercase, 1 lowercase, 1 number and 1 special character.