258.57% is the change from 140 to 502
Calculation steps:
[( 502 - 140 ) ÷ 140] x 100 = 258.57%
Formula
Percentage change = [(502 - 140) / 140] x 100
Subtract the new number by the original number
502 - 140 = 362
362 ÷ 140 = 2.585714285714286
2.585714285714286 x 100 = 258.57%