34/68 = 50%
A value of 50% shows up in everyday life when a store advertises half off, a weather forecast gives an even chance of rain, or a survey says half the people chose an option. It means the amount is split evenly into two equal parts.
You can picture 34/68 as one side of a pair of equal halves: 34 is exactly half of 68. A quick way to estimate it is to imagine dividing the whole into two matching groups and checking whether the part is the size of one group.
One common point of confusion is thinking that 34/68 is different from 1/2 because the numbers look larger. The two fractions name the same amount, so both represent half of the whole.