-97.93% is the change from 434 to 9
Calculation steps:
[( 9 - 434 ) ÷ 434] x 100 = -97.93%
Formula
Percentage change = [(9 - 434) / 434] x 100
Subtract the new number by the original number
9 - 434 = -425
-425 ÷ 434 = -0.9792626728110599
-0.9792626728110599 x 100 = -97.93%