-14.39% is the change from 278 to 238
Calculation steps:
[( 238 - 278 ) ÷ 278] x 100 = -14.39%
Formula
Percentage change = [(238 - 278) / 278] x 100
Subtract the new number by the original number
238 - 278 = -40
-40 ÷ 278 = -0.14388489208633093
-0.14388489208633093 x 100 = -14.39%