calculate the percentage of whether the customer registration is up or down
this can be simple or more complex depend on what the requirement you need, or how the result you need too.
for example :
the apps have the standart for customer registration like if total customer registered in one day is 40 so it will be count as 100% in percantage. but if only 20 customer has registered on that day, the percentage is only 50%. why ? because the apps have standart 40 customer is 100% in percentage.
but if the apps dont have standart for how to calculate the percentage, you can count percentage from the last day.
for the fisrt day app has 20 customer, and the second day 5 customer has rgistered, so total customer is 25.
to calculate the customer registration rate as a percentage, use the formula:
Customer Registration Rate (%) = (Number of Customers Registered / Total Number of Customers) * 100
Customer Registration Rate (%) = (5 / 25) * 100 = 20% // this can be state as down
so the percentage registered customer is 20% based on how many customer a day before.
or another sample
for the fisrt day app has `20` customer, and the second day `40` customer has rgistered, so total customer is `60`
Customer Registration Rate (%) = (40 / 60) * 100 = (2/3) * 100 ≈ 66.67% // this can be state as up
so the percentage registered customer is 66.67% based on how many customer a day before.
but there is no valid formula for this, you can use custom formula depend on what the result you need.