-33.9% is the change from 764 to 505
Calculation steps:
[( 505 - 764 ) ÷ 764] x 100 = -33.9%
Formula
Percentage change = [(505 - 764) / 764] x 100
Subtract the new number by the original number
505 - 764 = -259
-259 ÷ 764 = -0.3390052356020942
-0.3390052356020942 x 100 = -33.9%