You need $2,500 as a deposit for a new car. You have already saved 50% of this amount. Which calculation could you use to check how much you still need to save?

well, 50% is pretty much half.

you need 2500 for the deposit, you have 50% or half of that.

whatever% of anything is just (whatever/100) * anything.

50% of 2500 is just (50/100) * 2500 or 0.5 * 2500 or 1250.

how much more do you need? well, you need the other 50%.

50% of 2500 is just (50/100) * 2500 or 0.5 * 2500 or 1250.