287.32% is the change from 142 to 550
Calculation steps:
[( 550 - 142 ) ÷ 142] x 100 = 287.32%
Formula
Percentage change = [(550 - 142) / 142] x 100
Subtract the new number by the original number
550 - 142 = 408
408 ÷ 142 = 2.8732394366197185
2.8732394366197185 x 100 = 287.32%