-10.02% is the change from 639 to 575
Calculation steps:
[( 575 - 639 ) ÷ 639] x 100 = -10.02%
Formula
Percentage change = [(575 - 639) / 639] x 100
Subtract the new number by the original number
575 - 639 = -64
-64 ÷ 639 = -0.10015649452269171
-0.10015649452269171 x 100 = -10.02%