-15.83% is the change from 758 to 638
Calculation steps:
[( 638 - 758 ) ÷ 758] x 100 = -15.83%
Formula
Percentage change = [(638 - 758) / 758] x 100
Subtract the new number by the original number
638 - 758 = -120
-120 ÷ 758 = -0.158311345646438
-0.158311345646438 x 100 = -15.83%