250% is the change from 142 to 497
Calculation steps:
[( 497 - 142 ) ÷ 142] x 100 = 250%
Formula
Percentage change = [(497 - 142) / 142] x 100
Subtract the new number by the original number
497 - 142 = 355
355 ÷ 142 = 2.5
2.5 x 100 = 250%
Example