At 75% I accidentally broke the spiraling cones when I removed the print, but they printed well. The problems were the wire-frame ball fell apart, the lettering is illegible, and the tiny fingers were falling apart, some of them. But otherwise the rest of the details were present. In fact there are 3 tiny cylinders at this point and the vertical wall in the corner is back and complete.
At 50% it's amazing how much detail is still there. The lettering is still gone, the tiny fingers were gone, the cylinders were all merged into one blob, and the wire-frame ball was... actually it looks a little better at this level than 75%, but it was still a mess. But besides those few things the rest of the details were still, surprisingly, in tact.
I think that this "stress test" would be a good way for a designer to study to know how far they can safely push design and have it be successful on home 3D printers. Go any smaller than what this test did on your details and you're asking for trouble.