If you want to change your admin password, you can easily done it. See the steps.
STEP - 1
Click on Account app to change the password.
STEP - 2
In "Change Password" section you have to fill these three details to change the password.
1. Enter your old password
2. Enter your new password
3. Confirm your new password
STEP - 3
Finally click on "Submit" button to change the password.
Now your password is successfully changed. login again the admin panel.