-26.13% is the change from 639 to 472
Calculation steps:
[( 472 - 639 ) ÷ 639] x 100 = -26.13%
Formula
Percentage change = [(472 - 639) / 639] x 100
Subtract the new number by the original number
472 - 639 = -167
-167 ÷ 639 = -0.26134585289514867
-0.26134585289514867 x 100 = -26.13%