Hello,
What LacyMarie answered is right.
First Method :
145 pounds --> 100%
132 pounds --> x %
So x = 132*100/145 = 91 %
Now you just have to do 100 - 91 = 9 % decrease from 145 pounds to 132 pounds.
Second method :
145 - 132 = 13 right ?
145 pounds --> 100 %
13 pounds --> x %
So x = 13*100/145 = 9 %
The answer is 9 % decrease from 145 to 132.
I gave you 2 methods, do as you wish now !
Hope this helps !
Photon