Question

If a starting number is 30 and it falls to 11 what % decrease is that?

Answer 1

The question would've given you to what number you should round up your answer.

Answer is:

Whole number:

63%

1 decimal place:

63.3%

2 decimal places:

63.33%

Exact number:

`(190)/(3)`%

Explanation:

So the starting no. = 30

Ending no. = 11

In order to evaluate the percentage of decrease we:

(Ending number/starting number) * 100

So:

`(11)/(30) *100 = (11)/(3) *10 = (110)/(3)%`%

To find the Decrease percentage:

100 % - 110/3 %

= 63.333%