The price elasticity is -0.71 means
an increase in price by TK. 1 increase the demand by TK. 0.71
an increase in price by 1% reduces the demand by TK. 0.71%
an increase in price by TK. 0.71 reduces the demand by TK. 1
an inrease in price by TK. 0.71% increase the demand by 1%