-93.63% is the change from 816 to 52
Calculation steps:
[( 52 - 816 ) ÷ 816] x 100 = -93.63%
Formula
Percentage change = [(52 - 816) / 816] x 100
Subtract the new number by the original number
52 - 816 = -764
-764 ÷ 816 = -0.9362745098039216
-0.9362745098039216 x 100 = -93.63%