Caleb’s puppy weighs 2,250 grams. if the puppy weighed 600 grams at his last visit to the veterinarian’s office, what is the percent increase in the puppy’s weight rounded to the nearest whole number?

For this case we can make the following rule of three:
 2250 -----------> 100%
 600 -------------> x
 From here, we clear the value of x.
 We have then:
 
 Therefore, the decrease in percentage weight is:
 
 Round to the nearest whole number:
 x = 73%
 
 the percent decrease in the puppy's weight rounded to the nearest whole number is:
 x = 73%

These are the multiples of 15 but what you are probably asking or what are the factors of 15