Michigan Compiled Laws, Chapter 700. Estates and Protected Individuals Code § 700.2608

Sec. 2608. (1) Property a testator gave in his or her lifetime to a person is treated as a satisfaction of a devise in whole or in part only if any of the following are true:

(2) For purposes of partial satisfaction, property given during the testator's lifetime is valued as of the time the devisee came into possession or enjoyment of the property or at the testator's death, whichever occurs first.

(3) If the devisee fails to survive the testator, the gift is treated as a full or partial satisfaction of the devise, as appropriate, in applying sections 2603 and 2604,  1 unless the testator's contemporaneous writing provides otherwise.