-97.43% is the change from 350 to 9
Calculation steps:
[( 9 - 350 ) ÷ 350] x 100 = -97.43%
Formula
Percentage change = [(9 - 350) / 350] x 100
Subtract the new number by the original number
9 - 350 = -341
-341 ÷ 350 = -0.9742857142857143
-0.9742857142857143 x 100 = -97.43%