258.45% is the change from 142 to 509
Calculation steps:
[( 509 - 142 ) ÷ 142] x 100 = 258.45%
Formula
Percentage change = [(509 - 142) / 142] x 100
Subtract the new number by the original number
509 - 142 = 367
367 ÷ 142 = 2.584507042253521
2.584507042253521 x 100 = 258.45%