30/75 = 40%
A value like 30 out of 75, or 40%, might show up when a store reports that 30 of 75 items sold during a sale. You could also see it in a class survey or a progress report.
To picture 40%, imagine 40 spots filled on a grid of 100, or about two-fifths of a whole. It’s a little less than half, so that’s a quick way to estimate it.
A common mix-up is thinking 40% means 40 items, no matter how many there are altogether. It means 40 out of every 100, so the actual number depends on the total.