-29.11% is the change from 718 to 509
Calculation steps:
[( 509 - 718 ) ÷ 718] x 100 = -29.11%
Formula
Percentage change = [(509 - 718) / 718] x 100
Subtract the new number by the original number
509 - 718 = -209
-209 ÷ 718 = -0.29108635097493035
-0.29108635097493035 x 100 = -29.11%