Answer: Justin dirty laundry was reduced by  74. 18%
Explanation:
 Step 1 
 Total amount of clothes = 124 pieces
 Number of clothes reduced to = 32 pieces
To find the amount of the reduction, We will first Subtract the number reduced to from the initial amount of clothes giving us 
 Amount of reduction = 124- 32 =92 pieces of clothes 
 
 Step 2---Then we Divide the amount of the reduction of the clothes by the total amount of clothes to find the rate of reduction, giving us 
 Rate of reduction = 92/124 = 0.741
 
Step 3--- we finally Multiply the rate of reduction of clothes by 100 to find the percentage reduction.
0.741 x 100 = 74. 18%