-8.46% is the change from 697 to 638
Calculation steps:
[( 638 - 697 ) ÷ 697] x 100 = -8.46%
Formula
Percentage change = [(638 - 697) / 697] x 100
Subtract the new number by the original number
638 - 697 = -59
-59 ÷ 697 = -0.08464849354375897
-0.08464849354375897 x 100 = -8.46%