-90.31% is the change from 351 to 34
Calculation steps:
[( 34 - 351 ) ÷ 351] x 100 = -90.31%
Formula
Percentage change = [(34 - 351) / 351] x 100
Subtract the new number by the original number
34 - 351 = -317
-317 ÷ 351 = -0.9031339031339032
-0.9031339031339032 x 100 = -90.31%