Hi,
You have to check by setting 700MHz as your clock frequency is "X" in the Excel sheet.
As per your test result it seems that your 700MHz is not pure. you check the spurious level of 700MHz.
Your are always getting 200MHz at your output right?.
check at your 700MHz it may have 200MHz also because your are generating 700MHz by multiplying 25MHz and 200MHz is 8th harmonics of 25MHz.
Regards,
Durgesh.R