Excel supports the wildcard characters "*" and "?", and these wildcards can be used to perform partial (substring) matches in various lookup formulas. However, if you use wildcards with a number, you'll convert the numeric value to a text value. In other words, "*"&99&"*" = "*99*" (a text string), and if you try to find a text value in a range of numbers, the match will fail.
One solution is to convert the numeric values to text with the TEXT function like this:
This formula uses the TEXT function to transform the numbers in B5:B10 to text with the number format "0". Because we give the entire range to TEXT, we get back all values converted to text in an array, which is returned directly to the MATCH function as the array argument. With the numbers converted to text, the MATCH function can find a partial match as usual.
Note that MATCH must be configured for exact match to use wildcards, by setting the 3rd argument to zero (0) or FALSE.
The numbers in data become text without formatting, and the result is the same as above, 7.