-68.26% is the change from 816 to 259
Calculation steps:
[( 259 - 816 ) ÷ 816] x 100 = -68.26%
Formula
Percentage change = [(259 - 816) / 816] x 100
Subtract the new number by the original number
259 - 816 = -557
-557 ÷ 816 = -0.6825980392156863
-0.6825980392156863 x 100 = -68.26%