-89.75% is the change from 849 to 87
Calculation steps:
[( 87 - 849 ) ÷ 849] x 100 = -89.75%
Formula
Percentage change = [(87 - 849) / 849] x 100
Subtract the new number by the original number
87 - 849 = -762
-762 ÷ 849 = -0.8975265017667845
-0.8975265017667845 x 100 = -89.75%