-7.36% is the change from 639 to 592
Calculation steps:
[( 592 - 639 ) ÷ 639] x 100 = -7.36%
Formula
Percentage change = [(592 - 639) / 639] x 100
Subtract the new number by the original number
592 - 639 = -47
-47 ÷ 639 = -0.07355242566510173
-0.07355242566510173 x 100 = -7.36%