-53.44% is the change from 509 to 237
Calculation steps:
[( 237 - 509 ) ÷ 509] x 100 = -53.44%
Formula
Percentage change = [(237 - 509) / 509] x 100
Subtract the new number by the original number
237 - 509 = -272
-272 ÷ 509 = -0.5343811394891945
-0.5343811394891945 x 100 = -53.44%