-29.84% is the change from 831 to 583
Calculation steps:
[( 583 - 831 ) ÷ 831] x 100 = -29.84%
Formula
Percentage change = [(583 - 831) / 831] x 100
Subtract the new number by the original number
583 - 831 = -248
-248 ÷ 831 = -0.29843561973525873
-0.29843561973525873 x 100 = -29.84%