Thinknum's "LinkedIn Profile" dataset tracks the aggregated number of profiles which list a company as their employer. As a proxy to measure employee headcount, users will be able to see whether as company is gaining or losing employees over time.
Taking Stitch Fix as an example, users will be able to see the number of followers as well as employee count.
Switch to Chart view and utilize the "Absolute" tab to view DoD, QoQ and YoY percent change.
Here is the link for the documentation on the columns for this dataset: Columns Definition