-68.98% is the change from 835 to 259
Calculation steps:
[( 259 - 835 ) ÷ 835] x 100 = -68.98%
Formula
Percentage change = [(259 - 835) / 835] x 100
Subtract the new number by the original number
259 - 835 = -576
-576 ÷ 835 = -0.6898203592814371
-0.6898203592814371 x 100 = -68.98%