-91.71% is the change from 543 to 45
Calculation steps:
[( 45 - 543 ) ÷ 543] x 100 = -91.71%
Formula
Percentage change = [(45 - 543) / 543] x 100
Subtract the new number by the original number
45 - 543 = -498
-498 ÷ 543 = -0.9171270718232044
-0.9171270718232044 x 100 = -91.71%