Excel Conditional Formulas

[Katlee2020]

Hi. I want a cell to be highlighted if I have spent 70% or more of a years budget.

Eg
1000-800=200( therefore I want this cell to be filled red to alert me I have spent over 70%of my yearly budget.

Can anyone tell me how to do this correctly??

[#2]

@Katlee2020 

Does this help or dont you want the extra column

[#3]

@Katlee2020 

Or try this