-6.64% is the change from 768 to 717
Calculation steps:
[( 717 - 768 ) ÷ 768] x 100 = -6.64%
Formula
Percentage change = [(717 - 768) / 768] x 100
Subtract the new number by the original number
717 - 768 = -51
-51 ÷ 768 = -0.06640625
-0.06640625 x 100 = -6.64%