Preferred case: On the H4 chart, we have a bearish bias. To add confluence to this, price is under the Ichimoku cloud which indicates a bearish market. If this bearish momentum continues, expect price to possibly head towards the support line at 632.50 where the 50% fibonacci line is located.
Alternative scenario: Price may go back up to retest the resistance at 671.75, where the 38.2% Fibonacci line is located.