-10.63% is the change from 800 to 715
Calculation steps:
[( 715 - 800 ) ÷ 800] x 100 = -10.63%
Formula
Percentage change = [(715 - 800) / 800] x 100
Subtract the new number by the original number
715 - 800 = -85
-85 ÷ 800 = -0.10625
-0.10625 x 100 = -10.63%