-7.22% is the change from 637 to 591
Calculation steps:
[( 591 - 637 ) ÷ 637] x 100 = -7.22%
Formula
Percentage change = [(591 - 637) / 637] x 100
Subtract the new number by the original number
591 - 637 = -46
-46 ÷ 637 = -0.07221350078492936
-0.07221350078492936 x 100 = -7.22%