You do not need to invent a percentage to make client work sound valuable.
If verified metrics are unavailable, show the strongest evidence you can support:
• observed behavior
• research signals
• a clarified decision
• reduced delivery risk
• or learning that changed the...
Maybe the evidence is scattered. Maybe the story feels unclear. Maybe client work is difficult to show. Maybe presentation becomes another entire project.
Share the real blocker in your own words. The responses will...
Before turning client work into a case study, collect the evidence behind it.
The brief alone is not enough. You also need the constraints, your ownership, the decisions you can defend, the feedback that influenced the work, and the outcomes you can support.
A finished UX project does not automatically become a convincing case study.
The evidence is usually scattered across research files, design iterations, feedback, and old conversations. Turning it into something a client can quickly understand becomes a second project.