-90.03% is the change from 341 to 34
Calculation steps:
[( 34 - 341 ) ÷ 341] x 100 = -90.03%
Formula
Percentage change = [(34 - 341) / 341] x 100
Subtract the new number by the original number
34 - 341 = -307
-307 ÷ 341 = -0.9002932551319648
-0.9002932551319648 x 100 = -90.03%