-17.04% is the change from 769 to 638
Calculation steps:
[( 638 - 769 ) ÷ 769] x 100 = -17.04%
Formula
Percentage change = [(638 - 769) / 769] x 100
Subtract the new number by the original number
638 - 769 = -131
-131 ÷ 769 = -0.17035110533159947
-0.17035110533159947 x 100 = -17.04%