How To Calculate Drop Size In Sales. Divide 160 by 750 to get 0.213. It will only possible if we know to calculate the sales volume.
Once you have these values, you can use the following formula: To exprress this as a percentage multiply by 100 to get 12.65%. To calculate the average sales over your chosen period, you can simply find the total value of all sales orders in the chosen timeframe and divide by the intervals.
