-70.03% is the change from 861 to 258
Calculation steps:
[( 258 - 861 ) ÷ 861] x 100 = -70.03%
Formula
Percentage change = [(258 - 861) / 861] x 100
Subtract the new number by the original number
258 - 861 = -603
-603 ÷ 861 = -0.7003484320557491
-0.7003484320557491 x 100 = -70.03%