Formula to get percentage from a target, start, and current numbers

Question

I have 3 numbers:

• start = 0;
• current = 4;
• target = 10;

I want to figure out how far along current is in the percentage from start too target;

So in this example the percent would be 40%.

How would I figure out this if start were 2? I'm struggling to wrap my head around the formula.

Answer 1

$$\frac{\text{part}}{\text{whole}}=\frac{\%}{100}$$

e.g

1. What is $45\%$ of $500$?

Answer:$=500\times\frac{45}{100}=225$

2. What is $20\%$ of $50\%$ of $60\%$ of $200$?

Answer: $(((200\times \frac{60}{100})\times \frac{50}{100}))\times \frac{20}{100}=12$

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In your example: if start was equal $2$ so it is $50\%$ from the current$=4$ and it is $20\%$ from the target$=10$

Answer 2

To find the percentage, compute $$ \frac{\text{current progress}}{\text{total interval}} = \frac{current - start}{total - start} $$ then convert this fraction/decimal to a percentage.