-90.38% is the change from 811 to 78
Calculation steps:
[( 78 - 811 ) ÷ 811] x 100 = -90.38%
Formula
Percentage change = [(78 - 811) / 811] x 100
Subtract the new number by the original number
78 - 811 = -733
-733 ÷ 811 = -0.903822441430333
-0.903822441430333 x 100 = -90.38%