Income statement data (in thousands of dollars) for Collingwood Productions Corporation, a production company involved in the production of motion pictures and home entertainment, for the years ended December 31, 2015 and 2014, are as follows

a. Prepare a comparative income statement for fiscal years 2015 and 2014 in vertical form, stating each item as a percent of revenues. Round to one decimal place.
b. Comment on the significant changes.