-25.85% is the change from 646 to 479
Calculation steps:
[( 479 - 646 ) ÷ 646] x 100 = -25.85%
Formula
Percentage change = [(479 - 646) / 646] x 100
Subtract the new number by the original number
479 - 646 = -167
-167 ÷ 646 = -0.2585139318885449
-0.2585139318885449 x 100 = -25.85%