-97.61% is the change from 543 to 13
Calculation steps:
[( 13 - 543 ) ÷ 543] x 100 = -97.61%
Formula
Percentage change = [(13 - 543) / 543] x 100
Subtract the new number by the original number
13 - 543 = -530
-530 ÷ 543 = -0.9760589318600368
-0.9760589318600368 x 100 = -97.61%