Is it possible to use this module to verify sum of all values in multi-value integer field?

Is it possible to use this module to verify sum of all values in multi-value integer field? For example, if I have a multi-value integer field where each cardinal value represents a percentage, I don't want the user to be able to enter a set of values that sums > 100.

Can this module be used to validate the sum of all values in a multi-value field? If so, how?

If not, how difficult would it be to achieve this? Creative recipes welcome.