343.57% is the change from 140 to 621
Calculation steps:
[( 621 - 140 ) ÷ 140] x 100 = 343.57%
Formula
Percentage change = [(621 - 140) / 140] x 100
Subtract the new number by the original number
621 - 140 = 481
481 ÷ 140 = 3.4357142857142855
3.4357142857142855 x 100 = 343.57%