-93.01% is the change from 816 to 57
Calculation steps:
[( 57 - 816 ) ÷ 816] x 100 = -93.01%
Formula
Percentage change = [(57 - 816) / 816] x 100
Subtract the new number by the original number
57 - 816 = -759
-759 ÷ 816 = -0.9301470588235294
-0.9301470588235294 x 100 = -93.01%