-9.9% is the change from 788 to 710
Calculation steps:
[( 710 - 788 ) ÷ 788] x 100 = -9.9%
Formula
Percentage change = [(710 - 788) / 788] x 100
Subtract the new number by the original number
710 - 788 = -78
-78 ÷ 788 = -0.09898477157360407
-0.09898477157360407 x 100 = -9.9%