二個年月數字 差幾年幾月 (13960)

D2=TEXT(SUM(DATEDIF(TEXT(B2,"0-00"),TEXT(C2,"0-00"),{"Y","YM"})*{100,1}),"0年00月")

另解=TEXT(C2-B2-(RIGHT(C2,2)-RIGHT(B2,2)<0)*88,"0年00月")