-36.34% is the change from 831 to 529
Calculation steps:
[( 529 - 831 ) ÷ 831] x 100 = -36.34%
Formula
Percentage change = [(529 - 831) / 831] x 100
Subtract the new number by the original number
529 - 831 = -302
-302 ÷ 831 = -0.36341756919374246
-0.36341756919374246 x 100 = -36.34%