-5.11% is the change from 587 to 557
Calculation steps:
[( 557 - 587 ) ÷ 587] x 100 = -5.11%
Formula
Percentage change = [(557 - 587) / 587] x 100
Subtract the new number by the original number
557 - 587 = -30
-30 ÷ 587 = -0.05110732538330494
-0.05110732538330494 x 100 = -5.11%