Only 28 percent of Manhattan office workers come to work in person on an average day, a survey has found. Only 8 percent come to the office five days a week. In-person attendance has increased over the past year, but much slower than companies anticipated. The numbers don’t bode well for the commercial real estate market and for the city’s economy at large. The city is still reeling from the devastation caused by the COVID-19 pandemic as well as the government restrictions imposed in response to it. In October last year, only 10 percent of Manhattan office workers have returned after the initial lockdowns sent them working remotely, according to a survey by the Partnership for New York City, a membership organization for some of the top NYC business executives. The companies expected to have nearly half of their employees back in offices by July, but that proved a mirage. …