-25.38% is the change from 859 to 641
Calculation steps:
[( 641 - 859 ) ÷ 859] x 100 = -25.38%
Formula
Percentage change = [(641 - 859) / 859] x 100
Subtract the new number by the original number
641 - 859 = -218
-218 ÷ 859 = -0.25378346915017463
-0.25378346915017463 x 100 = -25.38%