-96.96% is the change from 427 to 13
Calculation steps:
[( 13 - 427 ) ÷ 427] x 100 = -96.96%
Formula
Percentage change = [(13 - 427) / 427] x 100
Subtract the new number by the original number
13 - 427 = -414
-414 ÷ 427 = -0.9695550351288056
-0.9695550351288056 x 100 = -96.96%