-6.37% is the change from 628 to 588
Calculation steps:
[( 588 - 628 ) ÷ 628] x 100 = -6.37%
Formula
Percentage change = [(588 - 628) / 628] x 100
Subtract the new number by the original number
588 - 628 = -40
-40 ÷ 628 = -0.06369426751592357
-0.06369426751592357 x 100 = -6.37%