39.91% is the change from 218 to 305
Calculation steps:
[( 305 - 218 ) ÷ 218] x 100 = 39.91%
Formula
Percentage change = [(305 - 218) / 218] x 100
Subtract the new number by the original number
305 - 218 = 87
87 ÷ 218 = 0.39908256880733944
0.39908256880733944 x 100 = 39.91%