-81.86% is the change from 849 to 154
Calculation steps:
[( 154 - 849 ) ÷ 849] x 100 = -81.86%
Formula
Percentage change = [(154 - 849) / 849] x 100
Subtract the new number by the original number
154 - 849 = -695
-695 ÷ 849 = -0.8186101295641932
-0.8186101295641932 x 100 = -81.86%