-98.27% is the change from 869 to 15
Calculation steps:
[( 15 - 869 ) ÷ 869] x 100 = -98.27%
Formula
Percentage change = [(15 - 869) / 869] x 100
Subtract the new number by the original number
15 - 869 = -854
-854 ÷ 869 = -0.9827387802071347
-0.9827387802071347 x 100 = -98.27%