-93.47% is the change from 199 to 13
Calculation steps:
[( 13 - 199 ) ÷ 199] x 100 = -93.47%
Formula
Percentage change = [(13 - 199) / 199] x 100
Subtract the new number by the original number
13 - 199 = -186
-186 ÷ 199 = -0.9346733668341709
-0.9346733668341709 x 100 = -93.47%