-13.69% is the change from 336 to 290
Calculation steps:
[( 290 - 336 ) ÷ 336] x 100 = -13.69%
Formula
Percentage change = [(290 - 336) / 336] x 100
Subtract the new number by the original number
290 - 336 = -46
-46 ÷ 336 = -0.13690476190476192
-0.13690476190476192 x 100 = -13.69%