-12.21% is the change from 909 to 798
Calculation steps:
[( 798 - 909 ) ÷ 909] x 100 = -12.21%
Formula
Percentage change = [(798 - 909) / 909] x 100
Subtract the new number by the original number
798 - 909 = -111
-111 ÷ 909 = -0.12211221122112212
-0.12211221122112212 x 100 = -12.21%