-1.72% is the change from 872 to 857
Calculation steps:
[( 857 - 872 ) ÷ 872] x 100 = -1.72%
Formula
Percentage change = [(857 - 872) / 872] x 100
Subtract the new number by the original number
857 - 872 = -15
-15 ÷ 872 = -0.017201834862385322
-0.017201834862385322 x 100 = -1.72%