Biggest correction in this move

Largest correction on the S&P has been 14 points roughly.
A retracement back to 76.4% of the weekly move since the new year is 1432.

A retracement from the last high to the recent low :

• 76.4% is 1422(roughly)
• 61.8% is 1428.5.
• 50% is 1434

I say it fails at 1428.....I may be hedging.