This worksheet is about finding the percentage change.
Example 1
A metal bar increases its length from 2m to 2.01m after heating.
Find the percentage increase in its length.
Actual increase = 2.01 - 2 = 0.01m .
| Percentage increase | = |
|
×100 | |||
| = |
|
×100 | = 0.5% |
Example 2
A woman reduced her weight from 80kg to 63kg after dieting.
Find the percentage decrease in her weight.
Actual decrease = 80 - 63 = 17kg.
| Percentage decrease | = |
|
×100 | |||
| = |
|
×100 | = 21.25% |
