-13.41% is the change from 738 to 639
Calculation steps:
[( 639 - 738 ) ÷ 738] x 100 = -13.41%
Formula
Percentage change = [(639 - 738) / 738] x 100
Subtract the new number by the original number
639 - 738 = -99
-99 ÷ 738 = -0.13414634146341464
-0.13414634146341464 x 100 = -13.41%