-16.49% is the change from 764 to 638
Calculation steps:
[( 638 - 764 ) ÷ 764] x 100 = -16.49%
Formula
Percentage change = [(638 - 764) / 764] x 100
Subtract the new number by the original number
638 - 764 = -126
-126 ÷ 764 = -0.1649214659685864
-0.1649214659685864 x 100 = -16.49%