Working from home. Last month I tracked 270h on my Mac workstation: 190 hours (70%) were productive, 24h (9%) neutral tools, and 56h (21%) distracting (mostly chats with friends).
I also spend 1-2 hours a day on my "leisure laptop" (for example reading HN from there but also some useful RSS feeds). So it feels like 65% would be a correct productivity score.
Tracked with https://qotoqot.com/qbserve/ of course, most of the productive time was spent on its development and marketing. :]