-92.02% is the change from 501 to 40
Calculation steps:
[( 40 - 501 ) ÷ 501] x 100 = -92.02%
Formula
Percentage change = [(40 - 501) / 501] x 100
Subtract the new number by the original number
40 - 501 = -461
-461 ÷ 501 = -0.9201596806387226
-0.9201596806387226 x 100 = -92.02%