Use the transaction KE30 and choose the report ZZZ-SOLV01

Enter 

1. the reporting currency = 10
2. the period
3. the company code
4. the plant code
5. the IECRA (when applicable)
6. select : "Classic drilldown report"

To have the detail of the value field D47 Ec/T030 => click on the amount, right click and select "Line items" or click F9

Use the lay out /D47 PPV to have the variance by material code

Explain the main variances

Display the standard costing of the material with CK13N. 

Enter :

1. The material & plant code
2. The costing variant
3. The validity date

and   

The standard cost of the material code 128715 is

18 099,12 CNY / 1 000 kg

Display the actual purchase price of the same material with the transaction MB51. 

Enter:

1. the material code 
2. the plant code
3. the movement type = 101 to 102
4. posting date = 1 month

The list of purchase orders to be analysed is displayed

Display a purchase order to calculate the purchase price variance 

a - Quantity purchased

b - Purchase price

c - Delivery costs

d - TOTAL costs = b + c

e - Actual unit price = d / a

f - Standard cost (from CK13N)

h - Purchase price var = (f - e) / a