Quandaries
and Queries 

When calculating a percentage, if the formula is A(new)  B(old)/A(new) Is this percentage change or percentage increase? Betty 

Hi Betty, Percentage change, percentage increase, percentage markup, percentage decrease, percentage reduction; all of these terms are used ambiguously at times. In many situations there is a time order as you indicate in your question with the words old and new. In this situation I think most people would say the percentage change is
that is you look at the change relative to where you started. If this is a positive number I would call it percentage increase, and if it is negative I would call it percentage decrease. I don't know of a term for
Penny 

