The 2019, 2018, and 2017 income statements for Jolly Fun Inc. follow.
Jolly Fun Inc.
Consolidated Income Statements

Required:
1. Calculate how much each of the revenues and expenses changed from 2017 through 2019 (in percentage terms, rounded to two decimal places). Utilize 2017 as the base year for both 2018 and 2019. You do not need to include the actual dollar amounts shown above.
2. Explain the primary causes of Jolly's increase in net income in 2018 and the decrease in 2019.