-89.22% is the change from 501 to 54
Calculation steps:
[( 54 - 501 ) ÷ 501] x 100 = -89.22%
Formula
Percentage change = [(54 - 501) / 501] x 100
Subtract the new number by the original number
54 - 501 = -447
-447 ÷ 501 = -0.8922155688622755
-0.8922155688622755 x 100 = -89.22%