-93.5% is the change from 816 to 53
Calculation steps:
[( 53 - 816 ) ÷ 816] x 100 = -93.5%
Formula
Percentage change = [(53 - 816) / 816] x 100
Subtract the new number by the original number
53 - 816 = -763
-763 ÷ 816 = -0.9350490196078431
-0.9350490196078431 x 100 = -93.5%