-87.62% is the change from 824 to 102
Calculation steps:
[( 102 - 824 ) ÷ 824] x 100 = -87.62%
Formula
Percentage change = [(102 - 824) / 824] x 100
Subtract the new number by the original number
102 - 824 = -722
-722 ÷ 824 = -0.8762135922330098
-0.8762135922330098 x 100 = -87.62%