A percentage change is a way to express a change in a variable. It represents the relative change between the old value and the new one.
For example, if a house today is worth $100,000 and the year after its worth goes up to $110,000, the percentage change of its worth can be expressed as
It can then be said that the worth of the house went up by 10%.
More generally, if V1 represents the old value and V2 the new one,
When the variable in question is a percentage itself, it is better to talk about its change by using percentage points, to avoid confusion between relative difference and absolute difference.
Read more about this topic: Relative Change And Difference
Famous quotes containing the words percentage and/or change:
“Actually, if my business was legitimate, I would deduct a substantial percentage for depreciation of my body.
Contemplative and bookish men must of necessitie be more quarrelsome than others, because they contend not about matter of fact, nor can determine their controversies by any certain witnesses, nor judges. But as long as they goe towards peace, that is Truth, it is no matter which way.”
—John Donne (c. 1572–1631)
“A good customer should not change his shop, nor a good shop change its customers.”
—Chinese proverb.