-6.3% is the change from 587 to 550
Calculation steps:
[( 550 - 587 ) ÷ 587] x 100 = -6.3%
Formula
Percentage change = [(550 - 587) / 587] x 100
Subtract the new number by the original number
550 - 587 = -37
-37 ÷ 587 = -0.06303236797274275
-0.06303236797274275 x 100 = -6.3%