-95.19% is the change from 810 to 39
Calculation steps:
[( 39 - 810 ) ÷ 810] x 100 = -95.19%
Formula
Percentage change = [(39 - 810) / 810] x 100
Subtract the new number by the original number
39 - 810 = -771
-771 ÷ 810 = -0.9518518518518518
-0.9518518518518518 x 100 = -95.19%