-83.65% is the change from 477 to 78
Calculation steps:
[( 78 - 477 ) ÷ 477] x 100 = -83.65%
Formula
Percentage change = [(78 - 477) / 477] x 100
Subtract the new number by the original number
78 - 477 = -399
-399 ÷ 477 = -0.8364779874213837
-0.8364779874213837 x 100 = -83.65%