I have a SSRS report that i need to calculate the Variance percent totals

which the math logic goes Occupied Variance % - Vacant Potiental percent - Damaged Potiential percent

Occupied Variance = 5%

Cacant Potiental = -5%

Damaged Potiential = -3%

so it 5% -(-5%) -(-3%)

How do i write this in a SSRS expression