-92.08% is the change from 505 to 40
Calculation steps:
[( 40 - 505 ) ÷ 505] x 100 = -92.08%
Formula
Percentage change = [(40 - 505) / 505] x 100
Subtract the new number by the original number
40 - 505 = -465
-465 ÷ 505 = -0.9207920792079208
-0.9207920792079208 x 100 = -92.08%