Thanks for reaching out to us. Although we can't share any specifics regarding your JSS, please note that not only public star rating but also private feedback, patterns of contracts without feedback and long-term relationships are included in JSS calculation and may cause the score to change.
Hala A wrote:
Upwork suddenly decreased my JSS from 94% to 88% for no apparent reason.
What's your private feedback percentage like? The "clients who would recommend me" percentage on your My Stats page? That's sort of your private JSS (but for the lifetime of your profile, whereas your JSS is the best of 3 windows.)
Also, only contracts in the last 6, 12 and/or 24 months count into your JSS, so when contracts fall out of your calculation window, the no longer count and other contracts weigh more heavily.