-29.74% is the change from 390 to 274
Calculation steps:
[( 274 - 390 ) ÷ 390] x 100 = -29.74%
Formula
Percentage change = [(274 - 390) / 390] x 100
Subtract the new number by the original number
274 - 390 = -116
-116 ÷ 390 = -0.29743589743589743
-0.29743589743589743 x 100 = -29.74%