-28.01% is the change from 639 to 460
Calculation steps:
[( 460 - 639 ) ÷ 639] x 100 = -28.01%
Formula
Percentage change = [(460 - 639) / 639] x 100
Subtract the new number by the original number
460 - 639 = -179
-179 ÷ 639 = -0.28012519561815336
-0.28012519561815336 x 100 = -28.01%