-96.23% is the change from 477 to 18
Calculation steps:
[( 18 - 477 ) ÷ 477] x 100 = -96.23%
Formula
Percentage change = [(18 - 477) / 477] x 100
Subtract the new number by the original number
18 - 477 = -459
-459 ÷ 477 = -0.9622641509433962
-0.9622641509433962 x 100 = -96.23%