How to deduct percentage after calculate two cells?

[DSeyir]

Hi,
I've the monthly value, that calculated by 12 months will give me 'X', then I want to deduct 20% of it?

can someone help me

 

[Andrzejek]

Wouldn't that be a simple:
[tt]
X - (X * 0.2)[/tt]

??

Have fun.

---- Andy

 

[DSeyir]

Sorry, I didnt explained myself:
I've one cell with the percentage, one with the monthly value, and need to display automatically on another cell the sum of 12 months deducting what is in the percentage cell in a way that when I change the monthly value it update the rest.

thanks

 

[Gruuuu]

so... 12 * (A1 - (A1 * A2)) ?
(If A1 is the Monthly Value and A2 is the percentage)

 

[DSeyir]

thanks