-29.86% is the change from 720 to 505
Calculation steps:
[( 505 - 720 ) ÷ 720] x 100 = -29.86%
Formula
Percentage change = [(505 - 720) / 720] x 100
Subtract the new number by the original number
505 - 720 = -215
-215 ÷ 720 = -0.2986111111111111
-0.2986111111111111 x 100 = -29.86%