-42.3% is the change from 409 to 236
Calculation steps:
[( 236 - 409 ) ÷ 409] x 100 = -42.3%
Formula
Percentage change = [(236 - 409) / 409] x 100
Subtract the new number by the original number
236 - 409 = -173
-173 ÷ 409 = -0.4229828850855746
-0.4229828850855746 x 100 = -42.3%