-16.17% is the change from 334 to 280
Calculation steps:
[( 280 - 334 ) ÷ 334] x 100 = -16.17%
Formula
Percentage change = [(280 - 334) / 334] x 100
Subtract the new number by the original number
280 - 334 = -54
-54 ÷ 334 = -0.16167664670658682
-0.16167664670658682 x 100 = -16.17%