-13.6% is the change from 750 to 648
Calculation steps:
[( 648 - 750 ) ÷ 750] x 100 = -13.6%
Formula
Percentage change = [(648 - 750) / 750] x 100
Subtract the new number by the original number
648 - 750 = -102
-102 ÷ 750 = -0.136
-0.136 x 100 = -13.6%