-90.17% is the change from 346 to 34
Calculation steps:
[( 34 - 346 ) ÷ 346] x 100 = -90.17%
Formula
Percentage change = [(34 - 346) / 346] x 100
Subtract the new number by the original number
34 - 346 = -312
-312 ÷ 346 = -0.9017341040462428
-0.9017341040462428 x 100 = -90.17%