# Math - Excel

posted by Carly

Hi, I need to write an Excel formula and I am trying to double check my work.

We are asked to find the difference and relative difference for this account.

So the values are:

\$10,000
\$10,700
\$11,400
\$12,100
\$12,800
\$13,500
etc.

The difference for each is \$700

I have two ways to calculate relative difference:
1) difference/original value or
2) new value - original value/original value

If I do the first one, my Excel formula would be =700/10,700 = 6.54%. Assume those numbers are in cells A3 and B3, so the formula would be B3/A3. (\$10,000 in A3, \$700 difference in B3)

However, if I use the second formula using the first two values, assuming the \$10,000 is in A2, \$10,700 is in A3, and difference of \$700 is in B3. I would get 10,700 - 10,000/10,000 = 7%. Formula would be (A3 - A2)/A2
The \$10,000 would be the original value, and the new value would be the \$10,700, so why am I getting a different percentage.

When I copy this formula all the way down, I am one year off. So the percent for year 5 in the first formula is in year 6 for the second, and so forth.

Obviously I'm missing something here, but just am not seeing what.

I'm sorry I tried to make this as clear as possible. I tried to copy and paste the spreadsheet but was not able to do so in a neat format.

Thank you.

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