-3.11% is the change from 900 to 872
Calculation steps:
[( 872 - 900 ) ÷ 900] x 100 = -3.11%
Formula
Percentage change = [(872 - 900) / 900] x 100
Subtract the new number by the original number
872 - 900 = -28
-28 ÷ 900 = -0.03111111111111111
-0.03111111111111111 x 100 = -3.11%