248.57% is the change from 140 to 488
Calculation steps:
[( 488 - 140 ) ÷ 140] x 100 = 248.57%
Formula
Percentage change = [(488 - 140) / 140] x 100
Subtract the new number by the original number
488 - 140 = 348
348 ÷ 140 = 2.4857142857142858
2.4857142857142858 x 100 = 248.57%