I raised my rates 40 percent in one go. Here is what happened

Six weeks ago I emailed every active client that my day rate was going from 450 to 630 starting next quarter. I expected to lose half of them. I lost one, the client who was already the most painful to work with. Two asked for a phased increase, which I agreed to. The rest replied with some version of about time. The strangest part was new enquiries. Conversion went up, not down. I think the old price was signalling junior.