-90.41% is the change from 813 to 78
Calculation steps:
[( 78 - 813 ) ÷ 813] x 100 = -90.41%
Formula
Percentage change = [(78 - 813) / 813] x 100
Subtract the new number by the original number
78 - 813 = -735
-735 ÷ 813 = -0.9040590405904059
-0.9040590405904059 x 100 = -90.41%