-90.62% is the change from 810 to 76
Calculation steps:
[( 76 - 810 ) ÷ 810] x 100 = -90.62%
Formula
Percentage change = [(76 - 810) / 810] x 100
Subtract the new number by the original number
76 - 810 = -734
-734 ÷ 810 = -0.9061728395061729
-0.9061728395061729 x 100 = -90.62%