You can switch between monthly and annual billing from Settings. The annual plan includes a discount compared to the monthly price. [verify discount %]
Go to Settings → Billing → Plan.
Click “Change frequency”.
Select the new frequency: Monthly or Annual.
The system will show the price with the new frequency and the applicable discount if you switch to Annual.
Confirm. The change will apply at the start of the next billing cycle. The current cycle will not be affected.