-89.18% is the change from 499 to 54
Calculation steps:
[( 54 - 499 ) ÷ 499] x 100 = -89.18%
Formula
Percentage change = [(54 - 499) / 499] x 100
Subtract the new number by the original number
54 - 499 = -445
-445 ÷ 499 = -0.8917835671342685
-0.8917835671342685 x 100 = -89.18%