You need to contain your custom number format in quotation marks - which means putting the M and K in double quotation marks as well. Try this:
Formula:
=TEXT(X14,"0.0%")&" O/R, "&TEXT(AA14,"[>=1000000]#.#0,,""M"";[>=1000]#,""K"";0")&" delivered, "&"Week "&AB14
Bookmarks