-99.79% is the change from 477 to 1
Calculation steps:
[( 1 - 477 ) ÷ 477] x 100 = -99.79%
Formula
Percentage change = [(1 - 477) / 477] x 100
Subtract the new number by the original number
1 - 477 = -476
-476 ÷ 477 = -0.9979035639412998
-0.9979035639412998 x 100 = -99.79%