Project Changing % Complete when entered

Why does MS Project change the % Complete value entered? We have a task with a Start date of 11/12/25 and Finish date of 1/20/27. The duration is 223.9 days based on a 4 day/10 hrs per day calendar (it is a long lead time material procurement task). The status date is 1/5/26 and the task has an Actual Start of 11/12/25. When I enter 10 in the % complete column and hit enter, Project changes this to 0%. When I enter 15 in the % complete column and hit enter, Project changes this to 5%. When I enter 50 in the % complete column and hit enter, Project changes this to 44%. I believe % Complete is either calculated or entered, but it seems if you enter a value in this field, Project shouldn't change it. What causes Project to change your % Complete value entered, and how do you get Project to display the desired % Complete for a task like this?