From the Washington Policy Center:
In a June 17 update, King County Metro provided information on the agency’s COVID-19 response and recovery, as well as the impact of the pandemic on budget and policy.
Metro reported that ridership decreased by about 71% systemwide. However, it is slowly recovering, with bus ridership at about 127,000 daily trips from June 15-19 (compared to 392,000 trips at this time in 2019). This represents a 68% decrease. The agency is operating service at 85% of pre-COVID levels.