Tesla Inc (TSLA) stock saw a decline, ending the day at $351.42 which represents a decrease of $-5.67 or -1.59% from the prior close of $357.09. The stock opened at $351.8 and touched a low of $348.2 ...
The percentages are calculated from adjusted stock prices, so the effect of the split itself is eliminated. You can see that both post-split timeframes were tough for TSLA and the two indexes.