-97.3% is the change from 481 to 13
Calculation steps:
[( 13 - 481 ) ÷ 481] x 100 = -97.3%
Formula
Percentage change = [(13 - 481) / 481] x 100
Subtract the new number by the original number
13 - 481 = -468
-468 ÷ 481 = -0.972972972972973
-0.972972972972973 x 100 = -97.3%