-68.17% is the change from 509 to 162
Calculation steps:
[( 162 - 509 ) ÷ 509] x 100 = -68.17%
Formula
Percentage change = [(162 - 509) / 509] x 100
Subtract the new number by the original number
162 - 509 = -347
-347 ÷ 509 = -0.6817288801571709
-0.6817288801571709 x 100 = -68.17%