16.81% is the change from 238 to 278
Calculation steps:
[( 278 - 238 ) ÷ 238] x 100 = 16.81%
Formula
Percentage change = [(278 - 238) / 238] x 100
Subtract the new number by the original number
278 - 238 = 40
40 ÷ 238 = 0.16806722689075632
0.16806722689075632 x 100 = 16.81%