-91.89% is the change from 493 to 40
Calculation steps:
[( 40 - 493 ) ÷ 493] x 100 = -91.89%
Formula
Percentage change = [(40 - 493) / 493] x 100
Subtract the new number by the original number
40 - 493 = -453
-453 ÷ 493 = -0.9188640973630832
-0.9188640973630832 x 100 = -91.89%