-33.86% is the change from 765 to 506
Calculation steps:
[( 506 - 765 ) ÷ 765] x 100 = -33.86%
Formula
Percentage change = [(506 - 765) / 765] x 100
Subtract the new number by the original number
506 - 765 = -259
-259 ÷ 765 = -0.338562091503268
-0.338562091503268 x 100 = -33.86%