-31.7% is the change from 839 to 573
Calculation steps:
[( 573 - 839 ) ÷ 839] x 100 = -31.7%
Formula
Percentage change = [(573 - 839) / 839] x 100
Subtract the new number by the original number
573 - 839 = -266
-266 ÷ 839 = -0.3170441001191895
-0.3170441001191895 x 100 = -31.7%