Percentages are ratios of an amount compared to 100. The percent change of an old to new value is equal to 100% x \({ new - old \over old }\).
If a mayor is elected with 89% of the votes cast and 90% of a town's 28,000 voters cast a vote, how many votes did the mayor receive?
| 15,120 | |
| 16,884 | |
| 20,160 | |
| 22,428 |