-36.82% is the change from 831 to 525
Calculation steps:
[( 525 - 831 ) ÷ 831] x 100 = -36.82%
Formula
Percentage change = [(525 - 831) / 831] x 100
Subtract the new number by the original number
525 - 831 = -306
-306 ÷ 831 = -0.36823104693140796
-0.36823104693140796 x 100 = -36.82%