-20.28% is the change from 843 to 672
Calculation steps:
[( 672 - 843 ) ÷ 843] x 100 = -20.28%
Formula
Percentage change = [(672 - 843) / 843] x 100
Subtract the new number by the original number
672 - 843 = -171
-171 ÷ 843 = -0.20284697508896798
-0.20284697508896798 x 100 = -20.28%