-25.92% is the change from 872 to 646
Calculation steps:
[( 646 - 872 ) ÷ 872] x 100 = -25.92%
Formula
Percentage change = [(646 - 872) / 872] x 100
Subtract the new number by the original number
646 - 872 = -226
-226 ÷ 872 = -0.2591743119266055
-0.2591743119266055 x 100 = -25.92%