-92.2% is the change from 513 to 40
Calculation steps:
[( 40 - 513 ) ÷ 513] x 100 = -92.2%
Formula
Percentage change = [(40 - 513) / 513] x 100
Subtract the new number by the original number
40 - 513 = -473
-473 ÷ 513 = -0.9220272904483431
-0.9220272904483431 x 100 = -92.2%