-70.81% is the change from 860 to 251
Calculation steps:
[( 251 - 860 ) ÷ 860] x 100 = -70.81%
Formula
Percentage change = [(251 - 860) / 860] x 100
Subtract the new number by the original number
251 - 860 = -609
-609 ÷ 860 = -0.708139534883721
-0.708139534883721 x 100 = -70.81%