18.14% is the change from 215 to 254
Calculation steps:
[( 254 - 215 ) ÷ 215] x 100 = 18.14%
Formula
Percentage change = [(254 - 215) / 215] x 100
Subtract the new number by the original number
254 - 215 = 39
39 ÷ 215 = 0.1813953488372093
0.1813953488372093 x 100 = 18.14%