-83.89% is the change from 478 to 77
Calculation steps:
[( 77 - 478 ) ÷ 478] x 100 = -83.89%
Formula
Percentage change = [(77 - 478) / 478] x 100
Subtract the new number by the original number
77 - 478 = -401
-401 ÷ 478 = -0.8389121338912134
-0.8389121338912134 x 100 = -83.89%