Conditional Formatting using VLOOKUP

I want to monitor if a status has changed on Sheet1 between two columns - but only unexpected changes.

I have a list on Sheet2 with column A containing original status and column B containing a list of changes the status could expect to make.

I know a named range has to be used because sheet referencing doesn't work for conditional formatting.

So I've been using this in the conditional formatting:

=VLOOKUP(B2,change,2,0)=A2

"change" refers to the named range of the two columns described on Sheet2.

As you can see from the attached, 'Limp' has been correctly identified as unexpected, 'Leap' and 'Hike' are expected and should not be highlighted, and 'Fall' at the bottom should also be highlighted but is not.

vlookupCF.xlsx