For convergence, the line should increase as price increases and decrease as price decreases. However, since 17 Aug, price and have diverged, that is price decreased as cumulative increased. This divergence serves as a probable indicator because it means, despite the price decrease, more buyers continue to accept an ask price than sellers accept a bid price.
Edit: you can press play and then zero the scales to 17 Aug by expanding/sliding the chart until 17 Aug is the first visible date. In doing so, we see that price decreased about 19% whereas increased about 6% relative to 17 Aug’s closing values.