-26.83% is the change from 872 to 638
Calculation steps:
[( 638 - 872 ) ÷ 872] x 100 = -26.83%
Formula
Percentage change = [(638 - 872) / 872] x 100
Subtract the new number by the original number
638 - 872 = -234
-234 ÷ 872 = -0.268348623853211
-0.268348623853211 x 100 = -26.83%