-97.95% is the change from 877 to 18
Calculation steps:
[( 18 - 877 ) ÷ 877] x 100 = -97.95%
Formula
Percentage change = [(18 - 877) / 877] x 100
Subtract the new number by the original number
18 - 877 = -859
-859 ÷ 877 = -0.9794754846066135
-0.9794754846066135 x 100 = -97.95%