-2.73% is the change from 587 to 571
Calculation steps:
[( 571 - 587 ) ÷ 587] x 100 = -2.73%
Formula
Percentage change = [(571 - 587) / 587] x 100
Subtract the new number by the original number
571 - 587 = -16
-16 ÷ 587 = -0.027257240204429302
-0.027257240204429302 x 100 = -2.73%