-89.49% is the change from 828 to 87
Calculation steps:
[( 87 - 828 ) ÷ 828] x 100 = -89.49%
Formula
Percentage change = [(87 - 828) / 828] x 100
Subtract the new number by the original number
87 - 828 = -741
-741 ÷ 828 = -0.894927536231884
-0.894927536231884 x 100 = -89.49%