-34.84% is the change from 775 to 505
Calculation steps:
[( 505 - 775 ) ÷ 775] x 100 = -34.84%
Formula
Percentage change = [(505 - 775) / 775] x 100
Subtract the new number by the original number
505 - 775 = -270
-270 ÷ 775 = -0.34838709677419355
-0.34838709677419355 x 100 = -34.84%