We are given : Promotional and selling activities account value = $52.50.
The actual price = $700.
52.50 of $700 could be written in fraction form as
52.50/700.
If we divide 52.70 by 700, we get a decimal value 0.075.
In order to convert it into percentage, we need to multiply that decimal number we got, by 100.
On multiplying 0.075 by 100, we get
0.075 * 100 = 7.5.
Therefore, $52.50 of $700 is 7.5%