-8.73% is the change from 699 to 638
Calculation steps:
[( 638 - 699 ) ÷ 699] x 100 = -8.73%
Formula
Percentage change = [(638 - 699) / 699] x 100
Subtract the new number by the original number
638 - 699 = -61
-61 ÷ 699 = -0.08726752503576538
-0.08726752503576538 x 100 = -8.73%