For full details on cancelling a membership and subscription see the following page:
Cancel your membership or subscription | Creative Cloud
Depending on where you are in your subscription cycle / membership and the type of membership
- If you have an individual membership, and opted for the annual membership (lower monthly fee). If you are cancelling in the middle of your membership, then you would be billed 50% of what's left of your membership for the remainder of the year, basically that would then in $$s become more like having taken out a month-by-month membership (higher monthly membership fee).
- If you are in the last month of your annual membership or your are on a month-by-month membership, you can log into your creative cloud account, cancel the plan yourself (no additional charges apply), by logging in with your Adobe ID and password, click your name in top left of screen and click on Manage Account.