48.28% is the change from 145 to 215
Calculation steps:
[( 215 - 145 ) ÷ 145] x 100 = 48.28%
Formula
Percentage change = [(215 - 145) / 145] x 100
Subtract the new number by the original number
215 - 145 = 70
70 ÷ 145 = 0.4827586206896552
0.4827586206896552 x 100 = 48.28%