-31.86% is the change from 747 to 509
Calculation steps:
[( 509 - 747 ) ÷ 747] x 100 = -31.86%
Formula
Percentage change = [(509 - 747) / 747] x 100
Subtract the new number by the original number
509 - 747 = -238
-238 ÷ 747 = -0.31860776439089694
-0.31860776439089694 x 100 = -31.86%