What percentage Armenian were Baldwin IV and Sibylla?

King Baldwin IV of Jerusalem (ruled 1174-1185) and his sister Sibylla (ruled 1186-1190) were the children of King Amaury I and Agnes of Edessa. Both Amaury and Agnes were 1/4th Armenian through their grandmothers. If both parents are 1/4th Armenian, than what percentage of Armenian heritage did Baldwin and Sibylla inherit? Math isn’t my strong suit.

1/4th. When both parents have the same percentage, that percentage is the one that is passed.