-36.41% is the change from 835 to 531
Calculation steps:
[( 531 - 835 ) ÷ 835] x 100 = -36.41%
Formula
Percentage change = [(531 - 835) / 835] x 100
Subtract the new number by the original number
531 - 835 = -304
-304 ÷ 835 = -0.36407185628742517
-0.36407185628742517 x 100 = -36.41%