Same as without money.
Most people work with percentages in one way or another.
work out the math
You can't
You can use percentages to compare who to borrow money from and where to invest you money. You can work out how price changes will affect you and whether or not your pay rise will match the increased costs. You can determine how well you need to do in your exams to get into the good colleges or universities.Basically, percentage changes can tell you how much something is increasing (or decreasing) relative to how much it was.
Because that it s harder to work out percentages than fractions and decimals
They are smart and know everything
When working with percentages, it is best not to round during the actual work. Only when you have your final answer do you round to the nearest hundredth. e.g. 96.54
27/50 = 54/100
They use percentages when they borrow or lend money. They read about prices going up (usually) in percentage terms while their pay may or may not.
4.1/22.20 = 18.5% approx.
No, I do not.