-93.51% is the change from 817 to 53
Calculation steps:
[( 53 - 817 ) ÷ 817] x 100 = -93.51%
Formula
Percentage change = [(53 - 817) / 817] x 100
Subtract the new number by the original number
53 - 817 = -764
-764 ÷ 817 = -0.9351285189718482
-0.9351285189718482 x 100 = -93.51%