284.14% is the change from 145 to 557
Calculation steps:
[( 557 - 145 ) ÷ 145] x 100 = 284.14%
Formula
Percentage change = [(557 - 145) / 145] x 100
Subtract the new number by the original number
557 - 145 = 412
412 ÷ 145 = 2.8413793103448275
2.8413793103448275 x 100 = 284.14%