-76.82% is the change from 509 to 118
Calculation steps:
[( 118 - 509 ) ÷ 509] x 100 = -76.82%
Formula
Percentage change = [(118 - 509) / 509] x 100
Subtract the new number by the original number
118 - 509 = -391
-391 ÷ 509 = -0.768172888015717
-0.768172888015717 x 100 = -76.82%