Hi @hareshhm
Overall premium % is calculated on difference of debit and credit premium.
Here Buy premium is 45 * 227.95 = 10257
Sell Premium is 15 * 120 = 1800
Net = 10257 -1800 = 8457
25% is calculated on this net premium i.e. 8457.
25% of 8457 is 2117.
So your overall SL is 2117