-91.48% is the change from 493 to 42
Calculation steps:
[( 42 - 493 ) ÷ 493] x 100 = -91.48%
Formula
Percentage change = [(42 - 493) / 493] x 100
Subtract the new number by the original number
42 - 493 = -451
-451 ÷ 493 = -0.9148073022312373
-0.9148073022312373 x 100 = -91.48%