-81.51% is the change from 849 to 157
Calculation steps:
[( 157 - 849 ) ÷ 849] x 100 = -81.51%
Formula
Percentage change = [(157 - 849) / 849] x 100
Subtract the new number by the original number
157 - 849 = -692
-692 ÷ 849 = -0.8150765606595995
-0.8150765606595995 x 100 = -81.51%