Please go through the following example.
Find the pay slip of Sandip Das (TTA, Champadanga, CAL SSA)
Before pay revision salary(Basic + DA + DP) of the month of April 2010 was Rs.19436 where as after pay revision salary (Basic + DA) of the month of May 2010 is Rs. 18885.
So pay reduced by Rs. 551.
(Click on the Image to view it, क्लिक ओं थे इमागे तो वीएव आईटी )