-97.8% is the change from 865 to 19
Calculation steps:
[( 19 - 865 ) ÷ 865] x 100 = -97.8%
Formula
Percentage change = [(19 - 865) / 865] x 100
Subtract the new number by the original number
19 - 865 = -846
-846 ÷ 865 = -0.9780346820809248
-0.9780346820809248 x 100 = -97.8%