-90.4% is the change from 354 to 34
Calculation steps:
[( 34 - 354 ) ÷ 354] x 100 = -90.4%
Formula
Percentage change = [(34 - 354) / 354] x 100
Subtract the new number by the original number
34 - 354 = -320
-320 ÷ 354 = -0.903954802259887
-0.903954802259887 x 100 = -90.4%