Percentual increase when the old Value is zero

Question

How do I compute the increase when the old value is zero? I know that usually we compute it as $$ \frac{N-V}{V} \times 100, $$ where $N$ is the new value and $V$ is the old value.

So,

going from $50$ to $500$, the increase is $900\% = \frac{500-50}{50} \times 100$
going from $50$ to $75$, the increase is $50\% = \frac{100-50}{50} \times 100$

But when going zero to $X$, where $X$ is any value greater than zero, the increase is $100\%$? (In this formula you can't divide by zero).

The percentage change you seek is undefined/"infinity" no matter what the new value is. It's not a meaningful answer to "By how much did this increase from zero?" The only meaningful answer to that question is to count how many new ____ you got after you started counting from 0. — nomen, Jan 27 '20 at 19:39
thanks @gt6989b for formatting in LaTeX and for better description. Cheers. — Lucas Vendramini, Jan 27 '20 at 19:43
@nomen, I'm implementing a financial system, the customer initial income is zero, then when the customer have for example 1000 dollars, what value of increase I should put in percentual? 0 to 1000 is an increase? — Lucas Vendramini, Jan 27 '20 at 19:45
Does this answer your question? What is the percentage increase to any value when initial value is 0? — an4s, Jan 27 '20 at 20:04
@an4s, it's the same question but the answer for this problem didn't have a single answer, matematically the answer is that the increase is undetermined number. I will have to create some artifice to treat that exception. — Lucas Vendramini, Jan 27 '20 at 20:19
@Lucas: don't make the initial balance 0. Make the initial balance whatever the customer deposits. :-) — nomen, Jan 27 '20 at 23:45
Interesting thing: inverting the variables, the result is always -100%.
500 to 0 is -100%

300 to 0 is -100%

X to 0 is -100%, where x > 0 — Lucas Vendramini, Jan 28 '20 at 16:15

Percentual increase when the old Value is zero

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