-8.69% is the change from 921 to 841
Calculation steps:
[( 841 - 921 ) ÷ 921] x 100 = -8.69%
Formula
Percentage change = [(841 - 921) / 921] x 100
Subtract the new number by the original number
841 - 921 = -80
-80 ÷ 921 = -0.08686210640608034
-0.08686210640608034 x 100 = -8.69%