| A | B |
| discount | the decrease in the price of an item |
| percent of change | the percent a quantity increases or decreases compared to the original amount |
| percent of increase | the percent of change when the new amount is more than the original amount |
| percent | a ratio that compares a number to 100 |
| sales tax | an amount added to the cost of an item usually based on a percentage |
| mark-up | the increase in the price of an item |
| percent of decrease | the percent of change when the new amount is less than the original amount |
| part | the number that you have |
| whole | the total number |