-31.41% is the change from 850 to 583
Calculation steps:
[( 583 - 850 ) ÷ 850] x 100 = -31.41%
Formula
Percentage change = [(583 - 850) / 850] x 100
Subtract the new number by the original number
583 - 850 = -267
-267 ÷ 850 = -0.31411764705882356
-0.31411764705882356 x 100 = -31.41%