First, open the dropdown menu in the top right corner and click on Profile settings.
Select the Security tab on the top menu:
Click the Change Password button:
When the Change Password popup window appears, fill in your current and new passwords.
Note that for security reasons, your password must follow certain rules to ensure that it is strong enough. Your password must:
Be at least 12 characters long
Example of accepted passwords;
Click on Change Password to save your new password.