Increase and more than 100%
You learn to calculate with a percentage increase and with more than 100%.
How to work it out
- For an increase, find how much was added and what part of the old value that is.
- 100% is the whole; more than 100% is more than the whole.
- So 150% is the whole plus half of it.
40
10
100
25
A club had 40 members, and now it has 50. By what percentage has it gone up?
- 10 members joined.
- Compare that with the old number: 10 out of 40.
- That is a quarter, and a quarter is 25%.
- So 25%.
More examples
150% of 60 = ?
100% is 60 and 50% is 30: together 90.
30 is what percentage of 20?
20 is 100%, and 30 is one and a half times as much: 150%.