-32.02% is the change from 509 to 346
Calculation steps:
[( 346 - 509 ) ÷ 509] x 100 = -32.02%
Formula
Percentage change = [(346 - 509) / 509] x 100
Subtract the new number by the original number
346 - 509 = -163
-163 ÷ 509 = -0.32023575638506874
-0.32023575638506874 x 100 = -32.02%