-29.7% is the change from 835 to 587
Calculation steps:
[( 587 - 835 ) ÷ 835] x 100 = -29.7%
Formula
Percentage change = [(587 - 835) / 835] x 100
Subtract the new number by the original number
587 - 835 = -248
-248 ÷ 835 = -0.2970059880239521
-0.2970059880239521 x 100 = -29.7%