-11.38% is the change from 800 to 709
Calculation steps:
[( 709 - 800 ) ÷ 800] x 100 = -11.38%
Formula
Percentage change = [(709 - 800) / 800] x 100
Subtract the new number by the original number
709 - 800 = -91
-91 ÷ 800 = -0.11375
-0.11375 x 100 = -11.38%