-88.72% is the change from 771 to 87
Calculation steps:
[( 87 - 771 ) ÷ 771] x 100 = -88.72%
Formula
Percentage change = [(87 - 771) / 771] x 100
Subtract the new number by the original number
87 - 771 = -684
-684 ÷ 771 = -0.8871595330739299
-0.8871595330739299 x 100 = -88.72%