Susie's dog weighed 32 pounds in 2010. At the end of 2011, the dog weighed 43.5 pounds. What was the percent increase in weight from 2010 to 2011?

43.5 - 32 = 11.5

11.5 pounds is the increase in dogs weight.

11.5 : 43.5 = 0.264

0.264 rounded to the nearest whole percent = 26%

The increase in weight from 2010 to 2011 is 26%