-95.61% is the change from 478 to 21
Calculation steps:
[( 21 - 478 ) ÷ 478] x 100 = -95.61%
Formula
Percentage change = [(21 - 478) / 478] x 100
Subtract the new number by the original number
21 - 478 = -457
-457 ÷ 478 = -0.9560669456066946
-0.9560669456066946 x 100 = -95.61%