-89.07% is the change from 494 to 54
Calculation steps:
[( 54 - 494 ) ÷ 494] x 100 = -89.07%
Formula
Percentage change = [(54 - 494) / 494] x 100
Subtract the new number by the original number
54 - 494 = -440
-440 ÷ 494 = -0.8906882591093117
-0.8906882591093117 x 100 = -89.07%