-83.68% is the change from 478 to 78
Calculation steps:
[( 78 - 478 ) ÷ 478] x 100 = -83.68%
Formula
Percentage change = [(78 - 478) / 478] x 100
Subtract the new number by the original number
78 - 478 = -400
-400 ÷ 478 = -0.8368200836820083
-0.8368200836820083 x 100 = -83.68%