145% is the change from 140 to 343
Calculation steps:
[( 343 - 140 ) ÷ 140] x 100 = 145%
Formula
Percentage change = [(343 - 140) / 140] x 100
Subtract the new number by the original number
343 - 140 = 203
203 ÷ 140 = 1.45
1.45 x 100 = 145%
Example