How do you find the percent change given the original number is 25 and new number is 28?

3 Answers
Jun 4, 2017

12%" increase"

Explanation:

"to calculate "color(blue)"percentage increase/decrease"

color(red)(bar(ul(|color(white)(2/2)color(black)(%" change "=("increase/decrease")/"original "xx100%)color(white)(2/2)|)))

"here the increase "=28-25=3

"and the original "=25

rArr%" change "=3/25xx100%

color(white)(rArrpercent chang)=3/cancel(25)^1xxcancel(100)^4%

color(white)(rArrpercent chang)=12%" increase"

Percent change is
12%

Explanation:

Percent change is (28-25)/25*100% =(3*4)%=12% [Ans]

Jun 4, 2017

12% increase

Explanation:

To find a percent change, write a fraction using the amount of change and the original value.

% "change" = "Fraction" xx100%

Change is 25 to 28 the actual difference is 28-25 = 3

3/25 xx 100%

= 12%