-32.59% is the change from 850 to 573
Calculation steps:
[( 573 - 850 ) ÷ 850] x 100 = -32.59%
Formula
Percentage change = [(573 - 850) / 850] x 100
Subtract the new number by the original number
573 - 850 = -277
-277 ÷ 850 = -0.32588235294117646
-0.32588235294117646 x 100 = -32.59%