I accidently deleted built-in default column 'Completed' from my SharePoint 2013 Task List. So I had to manually added a new column 'Completed' in type of 'Calculated' w value 'Yes/No'. This column then display text value 'Yes' or 'no' on the list. How to convert text value into a checkbox (exactly like built-in)? When box is checked, that means the task is completed so the List will automatically updated '%Complete' from 0% to 100%, and strikethrough the task name. When the box unchecked, that mean the task has not been completed yet. How to make this happen?
Thank you for your response.