-7.69% is the change from 637 to 588
Calculation steps:
[( 588 - 637 ) ÷ 637] x 100 = -7.69%
Formula
Percentage change = [(588 - 637) / 637] x 100
Subtract the new number by the original number
588 - 637 = -49
-49 ÷ 637 = -0.07692307692307693
-0.07692307692307693 x 100 = -7.69%