-70.2% is the change from 869 to 259
Calculation steps:
[( 259 - 869 ) ÷ 869] x 100 = -70.2%
Formula
Percentage change = [(259 - 869) / 869] x 100
Subtract the new number by the original number
259 - 869 = -610
-610 ÷ 869 = -0.7019562715765247
-0.7019562715765247 x 100 = -70.2%