How do I change the cell colour depending on if statement result?

I have a cell which is counting the total from 3 other cells. I want to add an if statement to this to say that if this total is the same as or equal to the number in the cell to the left of this cell than colour it Red and if not, don't change the colour.

In my attached spreadsheet, the cell that needs the formula is Sheet 1 Cell C2

Thanks!

Q for forum.xlsxQ for forum.xlsx

Hi, Thanks but the formula doesn't appear in the spreadsheet you sent back. Could you resend with formula or paste formula into a reply

From the Home tab, click on Conditional Formatting, then Manage Rules...

Ok thanks a million!