-90.52% is the change from 823 to 78
Calculation steps:
[( 78 - 823 ) ÷ 823] x 100 = -90.52%
Formula
Percentage change = [(78 - 823) / 823] x 100
Subtract the new number by the original number
78 - 823 = -745
-745 ÷ 823 = -0.905224787363305
-0.905224787363305 x 100 = -90.52%