-29.08% is the change from 392 to 278
Calculation steps:
[( 278 - 392 ) ÷ 392] x 100 = -29.08%
Formula
Percentage change = [(278 - 392) / 392] x 100
Subtract the new number by the original number
278 - 392 = -114
-114 ÷ 392 = -0.29081632653061223
-0.29081632653061223 x 100 = -29.08%