-21.89% is the change from 859 to 671
Calculation steps:
[( 671 - 859 ) ÷ 859] x 100 = -21.89%
Formula
Percentage change = [(671 - 859) / 859] x 100
Subtract the new number by the original number
671 - 859 = -188
-188 ÷ 859 = -0.21885913853317812
-0.21885913853317812 x 100 = -21.89%