50.34% is the change from 145 to 218
Calculation steps:
[( 218 - 145 ) ÷ 145] x 100 = 50.34%
Formula
Percentage change = [(218 - 145) / 145] x 100
Subtract the new number by the original number
218 - 145 = 73
73 ÷ 145 = 0.503448275862069
0.503448275862069 x 100 = 50.34%