-19.21% is the change from 505 to 408
Calculation steps:
[( 408 - 505 ) ÷ 505] x 100 = -19.21%
Formula
Percentage change = [(408 - 505) / 505] x 100
Subtract the new number by the original number
408 - 505 = -97
-97 ÷ 505 = -0.19207920792079208
-0.19207920792079208 x 100 = -19.21%