Answer:
67.5%
Explanation:
To calculate the percentage decrease in the share price of Bitcoin, we can use the following formula:
Percentage decrease = ((original value - new value) / original value) x 100%
Here, the original value is the share price before the crash, which is $60,000, and the new value is the share price after the crash, which is $19,500.
Substituting these values into the formula, we get:
Percentage decrease = ((60,000 - 19,500) / 60,000) x 100%
= 40,500 / 60,000 x 100%
= 67.5%
Therefore, the percentage decrease in the share price of Bitcoin is 67.5%.