-20.55% is the change from 842 to 669
Calculation steps:
[( 669 - 842 ) ÷ 842] x 100 = -20.55%
Formula
Percentage change = [(669 - 842) / 842] x 100
Subtract the new number by the original number
669 - 842 = -173
-173 ÷ 842 = -0.20546318289786222
-0.20546318289786222 x 100 = -20.55%