-90.68% is the change from 848 to 79
Calculation steps:
[( 79 - 848 ) ÷ 848] x 100 = -90.68%
Formula
Percentage change = [(79 - 848) / 848] x 100
Subtract the new number by the original number
79 - 848 = -769
-769 ÷ 848 = -0.9068396226415094
-0.9068396226415094 x 100 = -90.68%