-6.46% is the change from 588 to 550
Calculation steps:
[( 550 - 588 ) ÷ 588] x 100 = -6.46%
Formula
Percentage change = [(550 - 588) / 588] x 100
Subtract the new number by the original number
550 - 588 = -38
-38 ÷ 588 = -0.06462585034013606
-0.06462585034013606 x 100 = -6.46%