170.31% is the change from 128 to 346
Calculation steps:
[( 346 - 128 ) ÷ 128] x 100 = 170.31%
Formula
Percentage change = [(346 - 128) / 128] x 100
Subtract the new number by the original number
346 - 128 = 218
218 ÷ 128 = 1.703125
1.703125 x 100 = 170.31%