-34.07% is the change from 766 to 505
Calculation steps:
[( 505 - 766 ) ÷ 766] x 100 = -34.07%
Formula
Percentage change = [(505 - 766) / 766] x 100
Subtract the new number by the original number
505 - 766 = -261
-261 ÷ 766 = -0.34073107049608353
-0.34073107049608353 x 100 = -34.07%