248.28% is the change from 145 to 505
Calculation steps:
[( 505 - 145 ) ÷ 145] x 100 = 248.28%
Formula
Percentage change = [(505 - 145) / 145] x 100
Subtract the new number by the original number
505 - 145 = 360
360 ÷ 145 = 2.4827586206896552
2.4827586206896552 x 100 = 248.28%