-21.22% is the change from 900 to 709
Calculation steps:
[( 709 - 900 ) ÷ 900] x 100 = -21.22%
Formula
Percentage change = [(709 - 900) / 900] x 100
Subtract the new number by the original number
709 - 900 = -191
-191 ÷ 900 = -0.21222222222222223
-0.21222222222222223 x 100 = -21.22%