You can cancel your active subscription(s) anytime by logging into your account, hovering over your name at the top right, and then clicking My Products and Billing.
On the top right of the My Products and Billing page, click the "My Subscriptions" tab. This will show you an area with your account's currently active subscriptions along with a "cancel" button.
Click the "cancel" button and you'll be taken to an updated Product Selection page. This page will show the product subscriptions that are being removed. Click the Confirm Cancellation button at the bottom right and then proceed through the confirmation modal to finalize the subscription cancelation.