1 percent of 400 can be written as 20 percent * 400 =
Use the percentage formulae (P% × Y = X) to find out 1% of 400
P is 1, Y is 400, so the equation will be 1% × 400 = X
Percentage calculation with steps:
X = ( 1 * 400 ) / 100
X = 400 / 100
X = 4