From the graph, read the balances for April, December, August, and July.<br><br>
April as % of December = (April balance / December balance) × 100%.<br>
August as % of July = (August balance / July balance) × 100%.<br><br>
The dip with the lower percentage is proportionally larger (the balance fell by a bigger fraction).<br><br>
Final Answer: Read from the graph and compare percentages.