The % Complete fields contain the current status of a task, expressed as the percentage of the task's duration that has been completed. You can enter percent complete, or you can have Project calculate it for you based on actual duration.There are several categories of % Complete fields.o see the total percent complete for the task, review the % Complete field in the timephased portion of the Task Usage view or other task sheet view. Example The Write proposal task is scheduled for a duration of 10 days. The assigned resources have been working on the task for five days.