15.14% is the change from 218 to 251
Calculation steps:
[( 251 - 218 ) ÷ 218] x 100 = 15.14%
Formula
Percentage change = [(251 - 218) / 218] x 100
Subtract the new number by the original number
251 - 218 = 33
33 ÷ 218 = 0.15137614678899083
0.15137614678899083 x 100 = 15.14%