Question

This is purely a math question!

I simply can’t get my head around this formula. It is so simple, but I can’t get it to work in general.

I have 2 columns of numbers.

• Columns A+B is the full number of apples (100%).
• Column A: is the number of apples that I have eaten.
• Column B: is the number of apples that are left.

I need column C to be the percentage of apples that are left out of the full number.

For example.

 A   B   C
 0   3   100%
 5   0   0%
 2   2   50%

Can anybody wrap their heads around this?

Answer 1

Total = A + B

Left out apples = B

Percentage of left out apples = (B / Total) * 100

Consequently, here’s the formula:
Column C = ((Column B) / (Column A + Column B) * 100)

Here’s what you should type-in in Excel:

=(B1/(A1+B1))*100