-83.23% is the change from 477 to 80
Calculation steps:
[( 80 - 477 ) ÷ 477] x 100 = -83.23%
Formula
Percentage change = [(80 - 477) / 477] x 100
Subtract the new number by the original number
80 - 477 = -397
-397 ÷ 477 = -0.8322851153039832
-0.8322851153039832 x 100 = -83.23%