What is the decay factor that corresponds to a product that decreases its value first by 15%, and then decreases by 32% of its value, and finally decreases by 99% of its value? a. 0.32 c. 0.04752 b. 0.00578 d. 0.46

Let
x >  original value
1) decreases its value first by 15% > 100-15=85%
0.85*x > 0.85x

2) decreases by 32% of its value > 100-32=68%
0.85x*0.68=0.578x

3) decreases by 99% of its value > 100-99=1%
0.578x*0.01 > 0.00578x

the answer
is the option b.
0.00578