Another new visual feature that is rolling out to Microsoft Project for the web is the project percent complete visual on the project panel. This reached some of my tenants over the weekend. This follows the task filter feature that was released a few weeks ago: https://pwmather.wordpress.com/2020/04/16/projectfortheweb-task-filter-feature-workmanagement-taskmanagement-ppm-msproject-office365/.
The new project percent complete visual can be seen by clicking the project name to launch the project panel on the right hand side as seen below:
The new % complete visual can be found below the Finish data and Duration fields.