-53.83% is the change from 639 to 295
Calculation steps:
[( 295 - 639 ) ÷ 639] x 100 = -53.83%
Formula
Percentage change = [(295 - 639) / 639] x 100
Subtract the new number by the original number
295 - 639 = -344
-344 ÷ 639 = -0.5383411580594679
-0.5383411580594679 x 100 = -53.83%