There are the same number of calculations; a subtraction and a division. You neglected to multiply through by 100 for a percentage. My calculator doesn’t have parenthesis. I am a long time user of HPs. I understand there are calculators that use parenthesis but I find them impossible to use ;-).
Quote:
Originally Posted by CoachKandSportsguy
Correct! Fact check: TRUE
Simplier formula:
New / Old -1
no need for parenthesis on the calculator 
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