-89.13% is the change from 497 to 54
Calculation steps:
[( 54 - 497 ) ÷ 497] x 100 = -89.13%
Formula
Percentage change = [(54 - 497) / 497] x 100
Subtract the new number by the original number
54 - 497 = -443
-443 ÷ 497 = -0.8913480885311871
-0.8913480885311871 x 100 = -89.13%