-93.54% is the change from 820 to 53
Calculation steps:
[( 53 - 820 ) ÷ 820] x 100 = -93.54%
Formula
Percentage change = [(53 - 820) / 820] x 100
Subtract the new number by the original number
53 - 820 = -767
-767 ÷ 820 = -0.9353658536585366
-0.9353658536585366 x 100 = -93.54%