-0.21% is the change from 479 to 478
Calculation steps:
[( 478 - 479 ) ÷ 479] x 100 = -0.21%
Formula
Percentage change = [(478 - 479) / 479] x 100
Subtract the new number by the original number
478 - 479 = -1
-1 ÷ 479 = -0.0020876826722338203
-0.0020876826722338203 x 100 = -0.21%