Calculate percentage increase of a stock value?

If I buy a stock for $100.00 and it appreciates to $200.00, what is the best formula to calculate the % increase?



(200-100)/100



or



(200-100)/((200-100)/2)Calculate percentage increase of a stock value?
the first one gives you the right answer as "percentage increase". "1" (=100% as a decimal)



the second one is a "multiple" ie "2" / 200% its "doubled"



Your "increase" of 100 is the same (or 100%) of the amount you bought it for.



So the increase is 100%. An "increase" of 200% would be 300.



cheers and if you find that stock - let me know!!Calculate percentage increase of a stock value?
56Calculate percentage increase of a stock value?
($200/$100 - 1)*100% = 100%