Answer:
The correct answer is 14%
Explanation
Year 1: $600,000
Year 2: $684,000
Year 2 ($684,000) - Year 1 (600,000) = $84.000
Method "Rule of three" or Cross multiplication
$600,000------100%
$84,000-------- ?
$84,000 x 100= 8,400,000 then you divide the answer into $600,000
8,400,000/600,000= 14%