-5.95% is the change from 639 to 601
Calculation steps:
[( 601 - 639 ) ÷ 639] x 100 = -5.95%
Formula
Percentage change = [(601 - 639) / 639] x 100
Subtract the new number by the original number
601 - 639 = -38
-38 ÷ 639 = -0.0594679186228482
-0.0594679186228482 x 100 = -5.95%