-93.68% is the change from 475 to 30
Calculation steps:
[( 30 - 475 ) ÷ 475] x 100 = -93.68%
Formula
Percentage change = [(30 - 475) / 475] x 100
Subtract the new number by the original number
30 - 475 = -445
-445 ÷ 475 = -0.9368421052631579
-0.9368421052631579 x 100 = -93.68%