-70.9% is the change from 890 to 259
Calculation steps:
[( 259 - 890 ) ÷ 890] x 100 = -70.9%
Formula
Percentage change = [(259 - 890) / 890] x 100
Subtract the new number by the original number
259 - 890 = -631
-631 ÷ 890 = -0.7089887640449438
-0.7089887640449438 x 100 = -70.9%