-33.77% is the change from 764 to 506
Calculation steps:
[( 506 - 764 ) ÷ 764] x 100 = -33.77%
Formula
Percentage change = [(506 - 764) / 764] x 100
Subtract the new number by the original number
506 - 764 = -258
-258 ÷ 764 = -0.337696335078534
-0.337696335078534 x 100 = -33.77%