find the formula for G7 allowable decrease

find the cell formula

B D E F (type) | A 1 Input 2 Information 3 4 Constraint 1 5 Constraint 2 6 Constraint 3 7 8 Profit per Unit 9 Output 10 Information 11 Variables Variable 1 Variable 2 2 5 3 1 1 1 Used 40.0 30.0 13.1 Available 40 30 12 5 4 8.5 4.6 Total Profit 12 Total Profit 42.3 18.5 60.8 A B D E F G 1 Microsoft Excel Sensitivity Report 2 4 Adjustable Cels 5 Final Reduced Objective Allowable Allowable 6 Cell Name Value Cost Coefficient Increase Decrease 7 $B$11 Variables Variable 1 8.5 0.0 5 3.4 8 $C$11 Variables Variable 2 4.6 0.0 4 8.5 2333333333 9 10 Constraints 11 Final Shadow Constraint Allowable Allowable 12 Cell Name Value Price R.H. Side Increase Decrease 13 $D$4 Constraint 1 Used 40.0 0.5 40 110 7 14 $D$5 Constraint 2 Used 30.0 1.3 30 30 4.666666667 15 $D$6 Constraint 3 Used 13.1 0.0 12 1.076923077 1E+30 B D E F (type) | A 1 Input 2 Information 3 4 Constraint 1 5 Constraint 2 6 Constraint 3 7 8 Profit per Unit 9 Output 10 Information 11 Variables Variable 1 Variable 2 2 5 3 1 1 1 Used 40.0 30.0 13.1 Available 40 30 12 5 4 8.5 4.6 Total Profit 12 Total Profit 42.3 18.5 60.8 A B D E F G 1 Microsoft Excel Sensitivity Report 2 4 Adjustable Cels 5 Final Reduced Objective Allowable Allowable 6 Cell Name Value Cost Coefficient Increase Decrease 7 $B$11 Variables Variable 1 8.5 0.0 5 3.4 8 $C$11 Variables Variable 2 4.6 0.0 4 8.5 2333333333 9 10 Constraints 11 Final Shadow Constraint Allowable Allowable 12 Cell Name Value Price R.H. Side Increase Decrease 13 $D$4 Constraint 1 Used 40.0 0.5 40 110 7 14 $D$5 Constraint 2 Used 30.0 1.3 30 30 4.666666667 15 $D$6 Constraint 3 Used 13.1 0.0 12 1.076923077 1E+30