-20.17% is the change from 843 to 673
Calculation steps:
[( 673 - 843 ) ÷ 843] x 100 = -20.17%
Formula
Percentage change = [(673 - 843) / 843] x 100
Subtract the new number by the original number
673 - 843 = -170
-170 ÷ 843 = -0.20166073546856464
-0.20166073546856464 x 100 = -20.17%