-96.14% is the change from 337 to 13
Calculation steps:
[( 13 - 337 ) ÷ 337] x 100 = -96.14%
Formula
Percentage change = [(13 - 337) / 337] x 100
Subtract the new number by the original number
13 - 337 = -324
-324 ÷ 337 = -0.9614243323442137
-0.9614243323442137 x 100 = -96.14%