-82.64% is the change from 478 to 83
Calculation steps:
[( 83 - 478 ) ÷ 478] x 100 = -82.64%
Formula
Percentage change = [(83 - 478) / 478] x 100
Subtract the new number by the original number
83 - 478 = -395
-395 ÷ 478 = -0.8263598326359832
-0.8263598326359832 x 100 = -82.64%