Net income was $460,000 in 2017, $450,800 in 2018, and $477,848 in 2019. What is the percentage of change from (a) 2017 to 2018, and (b) from 2018 to 2019? Is the change an increase or a decrease? (If amount and percentage are a decrease show the numbers as negative, e.g. -55,000, -20% or (55,000), (20%). Round percentages to 0 decimal places, e.g. 12%.)