-85.13% is the change from 491 to 73
Calculation steps:
[( 73 - 491 ) ÷ 491] x 100 = -85.13%
Formula
Percentage change = [(73 - 491) / 491] x 100
Subtract the new number by the original number
73 - 491 = -418
-418 ÷ 491 = -0.8513238289205702
-0.8513238289205702 x 100 = -85.13%