250.71% is the change from 140 to 491
Calculation steps:
[( 491 - 140 ) ÷ 140] x 100 = 250.71%
Formula
Percentage change = [(491 - 140) / 140] x 100
Subtract the new number by the original number
491 - 140 = 351
351 ÷ 140 = 2.507142857142857
2.507142857142857 x 100 = 250.71%