-31.03% is the change from 738 to 509
Calculation steps:
[( 509 - 738 ) ÷ 738] x 100 = -31.03%
Formula
Percentage change = [(509 - 738) / 738] x 100
Subtract the new number by the original number
509 - 738 = -229
-229 ÷ 738 = -0.31029810298102983
-0.31029810298102983 x 100 = -31.03%