-93.36% is the change from 813 to 54
Calculation steps:
[( 54 - 813 ) ÷ 813] x 100 = -93.36%
Formula
Percentage change = [(54 - 813) / 813] x 100
Subtract the new number by the original number
54 - 813 = -759
-759 ÷ 813 = -0.933579335793358
-0.933579335793358 x 100 = -93.36%