The gestation period of horse (336) is what percent longer than the gestation period of bears (220 days).

335.38 percent

Step-by-step explanation:

56.8%

Step-by-step explanation:

(115/266)* 100 = 43.2%

which means 115 is 43.2% of 266

so,

The gestation period for Humans is 56.8% (100 - 43.2) longer than of pigs

I hope this is correct!

785%

Explanation:

487/42 =  7.85  *100=  785%  I  think.

percent change = ((new value) - (reference value))/(reference value) × 100%

... = (487 -65)/65 × 100%

... = 422/65 × 100%

... = 6.492 × 100%

... ≈ 649%

The gestation period of rhinos is 649% longer than the gestation period of dogs.

We have been asked to find percentage change of the gestation period of horses and cats.

First of all we will find difference between our two numbers.

Now we will find percentage of our difference with respect to gestation period of cats.

Therefore, gestation period of horses is 442% longer than the gestation period of cats.