I've analysed the Histogam (yellow), MACD
(blue), and Signal (brown). I've broken them up to show them as three histograms. I've colour coded all the highs, trough's, and zero crossovers. You will notice what happens when the signal histogram in brown which is below zero starts off on a fresh downward path at the same time as the histogram in yellow drops below zero, and I've marked the days with green downward facing arrows plus brown vertical in the chart above - I've left the most recent as a yellow vertical because it's the day when the histogram in yellow went below zero.
NOT ADVICE ALL STANDARD DISCLAIMERS APPLY. DO TOUR OWN RESEARCH.