okay so as you adviced, i first gave 54 days to actual duration, i inserted the remaining duration column and to that one did 14 days and as you said it automatically calculated the percent complete. so lets say a week from now when we are closer but not still complete, this time would i only update remaining duration? it doesnt seem like that because when i decreased 14 remaining days to 7, this time it also reduced the actual duration amount but may be it is because of today is the current date? and a week from now it would work? so in other words, i would update the actual duration only now and a week from now when i update the reamining duration it would work, or everytime, we update, we need to count the number of days passed and update the actual duration column as well?

also another question, when i inserted the remaining duration column and made it 14 days why is the % complete calculated to 79% and the work complete % is calculated to 0%?