-93.5% is the change from 477 to 31
Calculation steps:
[( 31 - 477 ) ÷ 477] x 100 = -93.5%
Formula
Percentage change = [(31 - 477) / 477] x 100
Subtract the new number by the original number
31 - 477 = -446
-446 ÷ 477 = -0.9350104821802935
-0.9350104821802935 x 100 = -93.5%