-87.41% is the change from 810 to 102
Calculation steps:
[( 102 - 810 ) ÷ 810] x 100 = -87.41%
Formula
Percentage change = [(102 - 810) / 810] x 100
Subtract the new number by the original number
102 - 810 = -708
-708 ÷ 810 = -0.8740740740740741
-0.8740740740740741 x 100 = -87.41%