-98.09% is the change from 470 to 9
Calculation steps:
[( 9 - 470 ) ÷ 470] x 100 = -98.09%
Formula
Percentage change = [(9 - 470) / 470] x 100
Subtract the new number by the original number
9 - 470 = -461
-461 ÷ 470 = -0.9808510638297873
-0.9808510638297873 x 100 = -98.09%