Hi ahhhmed,
Please use the below formula and will get right ans for your Qus..
For Year
=DATEDIF(E12,TODAY(),"y")
=DATEDIF(StartDate,EndDate,"y")
For Months
=DATEDIF(E12,TODAY(),"ym")
=DATEDIF(StartDate,EndDate,"ym")
For Days
=DATEDIF(E12,TODAY(),"md")...