-29.36% is the change from 831 to 587
Calculation steps:
[( 587 - 831 ) ÷ 831] x 100 = -29.36%
Formula
Percentage change = [(587 - 831) / 831] x 100
Subtract the new number by the original number
587 - 831 = -244
-244 ÷ 831 = -0.29362214199759323
-0.29362214199759323 x 100 = -29.36%