-7.5% is the change from 773 to 715
Calculation steps:
[( 715 - 773 ) ÷ 773] x 100 = -7.5%
Formula
Percentage change = [(715 - 773) / 773] x 100
Subtract the new number by the original number
715 - 773 = -58
-58 ÷ 773 = -0.07503234152652005
-0.07503234152652005 x 100 = -7.5%