257.75% is the change from 142 to 508
Calculation steps:
[( 508 - 142 ) ÷ 142] x 100 = 257.75%
Formula
Percentage change = [(508 - 142) / 142] x 100
Subtract the new number by the original number
508 - 142 = 366
366 ÷ 142 = 2.5774647887323945
2.5774647887323945 x 100 = 257.75%