Startups are pummeled in the ‘great unwinding’

San Francisco • After a crush of travel cancellations in March, WanderJaunt, a short-term home rental startup in San Francisco, laid off 56 of its 240 employees last week.Demand for services from Wonderschool, a startup that helps people find day care and preschool providers, dropped by half, leading it to cut most of its 60-person staff.And at ClassPass, which offers a membership program for fitness classes, more than 95% of revenue evaporated in just 10 days as studios and gyms around the