-10.67% is the change from 909 to 812
Calculation steps:
[( 812 - 909 ) ÷ 909] x 100 = -10.67%
Formula
Percentage change = [(812 - 909) / 909] x 100
Subtract the new number by the original number
812 - 909 = -97
-97 ÷ 909 = -0.10671067106710672
-0.10671067106710672 x 100 = -10.67%