-69.02% is the change from 836 to 259
Calculation steps:
[( 259 - 836 ) ÷ 836] x 100 = -69.02%
Formula
Percentage change = [(259 - 836) / 836] x 100
Subtract the new number by the original number
259 - 836 = -577
-577 ÷ 836 = -0.6901913875598086
-0.6901913875598086 x 100 = -69.02%