-33.81% is the change from 766 to 507
Calculation steps:
[( 507 - 766 ) ÷ 766] x 100 = -33.81%
Formula
Percentage change = [(507 - 766) / 766] x 100
Subtract the new number by the original number
507 - 766 = -259
-259 ÷ 766 = -0.3381201044386423
-0.3381201044386423 x 100 = -33.81%