-97.67% is the change from 430 to 10
Calculation steps:
[( 10 - 430 ) ÷ 430] x 100 = -97.67%
Formula
Percentage change = [(10 - 430) / 430] x 100
Subtract the new number by the original number
10 - 430 = -420
-420 ÷ 430 = -0.9767441860465116
-0.9767441860465116 x 100 = -97.67%