18.8% is the change from 234 to 278
Calculation steps:
[( 278 - 234 ) ÷ 234] x 100 = 18.8%
Formula
Percentage change = [(278 - 234) / 234] x 100
Subtract the new number by the original number
278 - 234 = 44
44 ÷ 234 = 0.18803418803418803
0.18803418803418803 x 100 = 18.8%