-25.98% is the change from 639 to 473
Calculation steps:
[( 473 - 639 ) ÷ 639] x 100 = -25.98%
Formula
Percentage change = [(473 - 639) / 639] x 100
Subtract the new number by the original number
473 - 639 = -166
-166 ÷ 639 = -0.2597809076682316
-0.2597809076682316 x 100 = -25.98%