a computer price is 995.00 but its 24%off how much will the computer will be pay for after the discount?

Will's way is the easiest to understand but this is a quicker method.

you start with 100% and decrease it by 24%. That leaves 76%

76% of 995 = 76/100*995

$${\frac{{\mathtt{76}}}{{\mathtt{100}}}}{\mathtt{\,\times\,}}{\mathtt{995}} = {\frac{{\mathtt{3\,781}}}{{\mathtt{5}}}} = {\mathtt{756.2}}$$

New price = $756.20

The formula for discounts is:

discount / 100 x price

If we apply this to your problem:

24 / 100 x 995

= 0.24 x 995

= 238.8 (insert currency here)

To find the new price, simply take the discount off the full price:

995 - 238.8

= 756.2 (insert currency here)