-15.84% is the change from 404 to 340
Calculation steps:
[( 340 - 404 ) ÷ 404] x 100 = -15.84%
Formula
Percentage change = [(340 - 404) / 404] x 100
Subtract the new number by the original number
340 - 404 = -64
-64 ÷ 404 = -0.15841584158415842
-0.15841584158415842 x 100 = -15.84%