Your question is a little bit unclear but I'll try to help:
When quantity increases, we can calculate it's percent increase using equation. PERCENT INCREASE= (new amount−original amount)/original amount} You can also multiply it by 100% go tet percent value.
When quantity decreases, you can calculate it's percent increase using equation. PERCENT DECREASE=(original amount−new amount)/original amount
You can also multiply it by 100% go tet percent value.
To find how much a quantity decreases compared to the original, use the percent decrease formula: Percent Decrease = ( O O − N ) × 100% . Example: If original quantity is 50 and new quantity is 30, the decrease is 40%.
;