-6.47% is the change from 587 to 549
Calculation steps:
[( 549 - 587 ) ÷ 587] x 100 = -6.47%
Formula
Percentage change = [(549 - 587) / 587] x 100
Subtract the new number by the original number
549 - 587 = -38
-38 ÷ 587 = -0.06473594548551959
-0.06473594548551959 x 100 = -6.47%