-53.63% is the change from 509 to 236
Calculation steps:
[( 236 - 509 ) ÷ 509] x 100 = -53.63%
Formula
Percentage change = [(236 - 509) / 509] x 100
Subtract the new number by the original number
236 - 509 = -273
-273 ÷ 509 = -0.5363457760314342
-0.5363457760314342 x 100 = -53.63%