From the information we have we know that
36% of that number is 0.24
We find out first what just 1% of the number will be.
0.24 = 36% (36% is 0.36 when you remove the percent)
x = 1 % (1% is 0.01 when you remove the percent)
where x is 1% of that number.
Cross multiplying the above equation we get:
x × 0.36 = 0.24×0.01
x = 0.024 / 0. 36
so 1% of that number is 0.24 × 0.01 /0.36
Therefore 100% of that number will be:
0.24 × 0.01 / 0.36 × 100 = 0.24/0.36 = 0.66
Therefore the number is 0.66