-89.05% is the change from 493 to 54
Calculation steps:
[( 54 - 493 ) ÷ 493] x 100 = -89.05%
Formula
Percentage change = [(54 - 493) / 493] x 100
Subtract the new number by the original number
54 - 493 = -439
-439 ÷ 493 = -0.8904665314401623
-0.8904665314401623 x 100 = -89.05%