In this case, the yodeler ascends to mountain peak which was 5,800ft above sea level high. After that, the yodeler descends 200ft from his initial height. Descending can be translated into minus because it will cause the height to be decreased. To determine the yodeler final height, you need to add -200ft into the initial height. The calculation would be:
final height= initial height + moving distance
final height = 5,800ft + (-200ft)= 5,600ft