283.8% is the change from 142 to 545
Calculation steps:
[( 545 - 142 ) ÷ 142] x 100 = 283.8%
Formula
Percentage change = [(545 - 142) / 142] x 100
Subtract the new number by the original number
545 - 142 = 403
403 ÷ 142 = 2.8380281690140845
2.8380281690140845 x 100 = 283.8%