18.3% is the change from 235 to 278
Calculation steps:
[( 278 - 235 ) ÷ 235] x 100 = 18.3%
Formula
Percentage change = [(278 - 235) / 235] x 100
Subtract the new number by the original number
278 - 235 = 43
43 ÷ 235 = 0.1829787234042553
0.1829787234042553 x 100 = 18.3%