-15.65% is the change from 409 to 345
Calculation steps:
[( 345 - 409 ) ÷ 409] x 100 = -15.65%
Formula
Percentage change = [(345 - 409) / 409] x 100
Subtract the new number by the original number
345 - 409 = -64
-64 ÷ 409 = -0.15647921760391198
-0.15647921760391198 x 100 = -15.65%