-90.68% is the change from 837 to 78
Calculation steps:
[( 78 - 837 ) ÷ 837] x 100 = -90.68%
Formula
Percentage change = [(78 - 837) / 837] x 100
Subtract the new number by the original number
78 - 837 = -759
-759 ÷ 837 = -0.9068100358422939
-0.9068100358422939 x 100 = -90.68%