-98.47% is the change from 847 to 13
Calculation steps:
[( 13 - 847 ) ÷ 847] x 100 = -98.47%
Formula
Percentage change = [(13 - 847) / 847] x 100
Subtract the new number by the original number
13 - 847 = -834
-834 ÷ 847 = -0.9846517119244392
-0.9846517119244392 x 100 = -98.47%