Social Campaign Analytics
Once your social media campaign has been sent, you can monitor the performance of the campaign by going to Campaigns > Social > then click on the campaign name and here you will see detailed analytics for the campaign by channel in real-time.

Follower History
In the campaign analytics for each campaign as well as monitoring the performance of that campaign, you can also view your Follower History by channel. This view allows you to see changes to your follower count over time, alongside recent campaigns so you can see easily which social media campaigns had a positive (or negative) impact on your number of followers.
This view can also be accessed by clicking on your profile image in the top right corner of the screen > Integrations > click Manage next to the social channel you'd like to view and then click History.