user72374: If a currency price is showing ABC per coin and its price % is +X% or -X% then this reference is taken from which last price i.e. which point of time the price is taken   

user70455: The 24h % change is the difference between the current price and the price 24 hours ago. 
The current price of bitcoin is $14988 and was $14937 24h ago. So the 24h change is +0.3%, even if there was a huge spike between this period of time.

72374: <p>If a currency price is showing ABC per coin and its price % is +X% or -X% then this reference is taken from which last price i.e. which point of time the price is taken   </p>
 70455: <p>The 24h % change is the difference between the current price and the price 24 hours ago. </p>

<p>The current price of bitcoin is $14988 and was $14937 24h ago. So the 24h change is +0.3%, even if there was a huge spike between this period of time.</p>
